Beta Build: No content can be deployed when using a named server

[kgartland-rstudio]

rsconnect-python version: 1.17.0b1

When deploying any content using the -n option, the deployment fails with the following error:

> rsconnect deploy api ./ -n dogfood -N -v
    Warning: the existing manifest.json file will not be used or considered.
Validating server... 	[OK]
Validating app mode... 	[ERROR]: local variable 'app_store_version' referenced before assignment
Traceback (most recent call last):
  File "/Users/kgartland/.pyenv/versions/3.8.2/envs/rsconnect-tag/lib/python3.8/site-packages/rsconnect/main.py", line 96, in wrapper
    result = func(*args, **kwargs)
  File "/Users/kgartland/.pyenv/versions/3.8.2/envs/rsconnect-tag/lib/python3.8/site-packages/rsconnect/main.py", line 1313, in deploy_app
    ce.validate_server()
  File "/Users/kgartland/.pyenv/versions/3.8.2/envs/rsconnect-tag/lib/python3.8/site-packages/rsconnect/log.py", line 186, in wrapper
    result = method(self, *args, **kw)
  File "/Users/kgartland/.pyenv/versions/3.8.2/envs/rsconnect-tag/lib/python3.8/site-packages/rsconnect/api.py", line 892, in validate_app_mode
    self.state["app_store_version"] = app_store_version
UnboundLocalError: local variable 'app_store_version' referenced before assignment
Internal error: local variable 'app_store_version' referenced before assignment

When using the -s/-k values content deploys as expected.