Starlette Issue with Dagster 1.6.1 & Starlette 0.36.0

[cody-scott]

Dagster version

1.6.1

What's the issue?

When launching the dev environment with dagster version locked at 1.6.1, starlette is updating to 0.36.0 and fails to launch with the following error:

2024-01-22 21:37:33 +0000 - dagster-webserver - INFO - Serving dagster-webserver on http://127.0.0.1:3000 in process 3642
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/protocols/http/httptools_impl.py", line 419, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/home/vscode/.local/lib/python3.11/site-packages/dagster_webserver/webserver.py", line 390, in __call__
    await self.app(scope, receive, send_wrapper)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/middleware/exceptions.py", line 62, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 758, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 778, in app
    await route.handle(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 299, in handle
    await self.app(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 79, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/routing.py", line 77, in app
    await response(scope, receive, send)
  File "/home/vscode/.local/lib/python3.11/site-packages/starlette/responses.py", line 340, in __call__
    elif "http.response.pathsend" in scope["extensions"]:
                                     ~~~~~^^^^^^^^^^^^^^
KeyError: 'extensions'

resolved by locking "starlette<0.36.0"

What did you expect to happen?

Dagster UI to launch on localhost:3000.

Problem also happened on earlier version (1.5.12).

How to reproduce?

setup.py file

from setuptools import find_packages, setup

setup(
    name="project",
    version="1.0.0",
    packages=find_packages(exclude=["project_tests"]),
    install_requires=[
        "dagster==1.6.1",
        "dagster-postgres==0.22.1",
        "dagster_docker==0.22.1",
        "dagster_msteams==0.22.1",
    ],
    extras_require={
        "dev": [
            "dagster-webserver==1.6.1",
            "pytest",
            "pytest-mock",
            "pytest-cov",
            "black",
            "ruff",
        ]
    },
)

Deployment type

Docker Compose

Deployment details

development is in a devcontainer.

Additional information

No response

Message from the maintainers

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[camcyr-at-brzwy]

I'm experiencing the same issue as @cody-scott. I was able to work around it by pinning to an older version of starlette in the Dockerfile that builds my dagster-webserver image.
RUN pip install --upgrade --force-reinstall "starlette<0.36.0"

[alangenfeld]

I believe this is an issue in the 0.36.0 release of starlette

encode/starlette#2436

[cody-scott]

Agreed. Since dagster isn't pinning the version I imagine it'll be popping up for others no?

[laurentS]

I hit that bug 2h after starlette 0.36.0 was released yesterday. Fixed it by pinning the version of starlette to 0.35.1. 0.36.1 that just came out works as well. Is it worth adding starlette != 0.36.0 to setup.py?