Could not load file or assembly 'em_10 (Blazor hot reload)

[Solbstr]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Hot reload is broken in my project, cant understand where this error comes from or what it is. It started happening for about 1-2 weeks ago.

Expected Behavior

Hot reload should run as expected and refresh the browser.

Steps To Reproduce

No response

Exceptions (if any)

Error: System.TypeLoadException: EnC: we do not support patching of existing PARAM table cols. token=0x08000d0e
at System.Reflection.Metadata.MetadataUpdater.ApplyUpdate(:5001/Assembly assembly, ReadOnlySpan1 metadataDelta, ReadOnlySpan1 ilDelta, ReadOnlySpan1 pdbDelta) at Microsoft.Extensions.HotReload.HotReloadAgent.ApplyDeltas(:5001/IReadOnlyList1 deltas)
at Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.ApplyHotReloadDelta(:5001/String moduleIdString, Byte[] metadataDelta, Byte[] ilDelta, Byte[] pdbBytes)
at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.InvokeSynchronously(:5001/JSRuntime jsRuntime, DotNetInvocationInfo& callInfo, IDotNetObjectReference objectReference, String argsJson)
at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.Invoke(:5001/JSRuntime jsRuntime, DotNetInvocationInfo& invocationInfo, String argsJson)
at Microsoft.AspNetCore.Components.WebAssembly.Services.DefaultWebAssemblyJSRuntime.InvokeDotNet(:5001/String assemblyName, String methodIdentifier, String dotNetObjectId, String argsJson)
at qi (dotnet.7.0.11.sf8asx8yhf.js:5:80665)
at Ji (dotnet.7.0.11.sf8asx8yhf.js:5:80549)
at _Microsoft_AspNetCore_Components_WebAssembly__Microsoft_AspNetCore_Components_WebAssembly_Services_DefaultWebAssemblyJSRuntime_InvokeDotNet (_Microsoft_AspNetCore_Components_WebAssembly__Microsoft_AspNetCore_Components_WebAssembly_Services_DefaultWebAssemblyJSRuntime_InvokeDotNet:30:5)
at Object.invokeDotNetFromJS (blazor.webassembly.js:1:45224)
at g (blazor.webassembly.js:1:1621)
at e.invokeMethod (blazor.webassembly.js:1:2670)
at Vt.Ke._internal.applyHotReload (blazor.webassembly.js:1:58767)
at aspnetcore-browser-refresh.js:140:35
at Array.forEach ()
at applyBlazorDeltas (aspnetcore-browser-refresh.js:138:14)

.NET Version

7.0.11

Anything else?

No response

[Solbstr]

21:34 38.92 MyApp.Server (Web assembly): Sending updates to running application
21:34 38.97 MyApp.Server (Web assembly): [Error] Applying updates failed:
21:34 38.97 MyApp.Server (Web assembly): [Error] Applying updates failed: The following error occurred when trying to apply your edits to the running application.
21:34 38.97 Exception thrown for Apply Code Updates: 0x80131500 - The following error occurred when trying to apply your edits to the running application. The following error occurred when trying to apply your edits to the running application.
21:34 38.97 Stack trace for WebToolsException:
at Microsoft.WebTools.ProjectSystem.Components.HotReload.ProjectHotReloadSession.d__16.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.VisualStudio.Debugger.Shared.Utilities.LoggerExtensions.d__3.MoveNext()
21:34 38.99 An unexpected error has occurred, any pending updates have been discarded.

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Issue Details

---

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

Hot reload is broken in my project, cant understand where this error comes from or what it is. It started happening for about 1-2 weeks ago.

Expected Behavior

Hot reload should run as expected and refresh the browser.

Steps To Reproduce

No response

Exceptions (if any)

Error: System.TypeLoadException: EnC: we do not support patching of existing PARAM table cols. token=0x08000d0e
at System.Reflection.Metadata.MetadataUpdater.ApplyUpdate(:5001/Assembly assembly, ReadOnlySpan1 metadataDelta, ReadOnlySpan1 ilDelta, ReadOnlySpan1 pdbDelta) at Microsoft.Extensions.HotReload.HotReloadAgent.ApplyDeltas(:5001/IReadOnlyList1 deltas)
at Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.ApplyHotReloadDelta(:5001/String moduleIdString, Byte[] metadataDelta, Byte[] ilDelta, Byte[] pdbBytes)
at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.InvokeSynchronously(:5001/JSRuntime jsRuntime, DotNetInvocationInfo& callInfo, IDotNetObjectReference objectReference, String argsJson)
at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.Invoke(:5001/JSRuntime jsRuntime, DotNetInvocationInfo& invocationInfo, String argsJson)
at Microsoft.AspNetCore.Components.WebAssembly.Services.DefaultWebAssemblyJSRuntime.InvokeDotNet(:5001/String assemblyName, String methodIdentifier, String dotNetObjectId, String argsJson)
at qi (dotnet.7.0.11.sf8asx8yhf.js:5:80665)
at Ji (dotnet.7.0.11.sf8asx8yhf.js:5:80549)
at _Microsoft_AspNetCore_Components_WebAssembly__Microsoft_AspNetCore_Components_WebAssembly_Services_DefaultWebAssemblyJSRuntime_InvokeDotNet (_Microsoft_AspNetCore_Components_WebAssembly__Microsoft_AspNetCore_Components_WebAssembly_Services_DefaultWebAssemblyJSRuntime_InvokeDotNet:30:5)
at Object.invokeDotNetFromJS (blazor.webassembly.js:1:45224)
at g (blazor.webassembly.js:1:1621)
at e.invokeMethod (blazor.webassembly.js:1:2670)
at Vt.Ke._internal.applyHotReload (blazor.webassembly.js:1:58767)
at aspnetcore-browser-refresh.js:140:35
at Array.forEach ()
at applyBlazorDeltas (aspnetcore-browser-refresh.js:138:14)

.NET Version

7.0.11

Anything else?

No response

Author:	solbster
Assignees:	-
Labels:	area-AssemblyLoader-mono
Milestone:	-

[lambdageek]

@solbster is this the same issue as #93149?

[Solbstr]

@solbster is this the same issue as #93149?

Yes, sorry for the duplicate.
This one can be closed.