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[browser][MT] JSHostImplementation.CallEntrypoint - The handle is invalid #109636

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@pavelsavara

Log

[18:14:00] info: 006 |           -    : isRunning:false isAttached:false isEventLoop:false reuseCount:  0 - emscripten-pool
JavaScript error: http://127.0.0.1:39061/_framework/dotnet.runtime.js, line 3: Error: The handle is invalid.
[18:14:00] fail: [0x000ebc38--UI- 18:14:00.975] MONO_WASM: The handle is invalid.
                    at System.Reflection.MethodBase.GetMethodFromHandle(RuntimeMethodHandle handle)
                    at System.Runtime.InteropServices.JavaScript.JSHostImplementation.CallEntrypoint(IntPtr assemblyNamePtr, String[] args, Boolean waitForDebugger)
                 ManagedError@http://127.0.0.1:39061/_framework/dotnet.runtime.js:3:37412
                 un@http://127.0.0.1:39061/_framework/dotnet.runtime.js:3:27191
                 cn/<@http://127.0.0.1:39061/_framework/dotnet.runtime.js:3:26754
                 ql</</<@http://127.0.0.1:39061/_framework/dotnet.runtime.js:3:201014
                 ql</<@http://127.0.0.1:39061/_framework/dotnet.runtime.js:3:201135
                 callUserCallback@http://127.0.0.1:39061/_framework/dotnet.native.js:8:98666
                 createDotnetRuntime/safeSetTimeout/createDotnetRuntime<@http://127.0.0.1:39061/_framework/dotnet.native.js:8:106269
[18:14:01] info: WASM EXIT 1

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=863764&view=logs&jobId=f02b8cf9-dd4d-54fc-c292-2bb1d305b019
Build error leg or test failing:

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "MONO_WASM: The handle is invalid",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=863764
Error message validated: [MONO_WASM: The handle is invalid]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 11/8/2024 11:55:26 AM UTC

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Summary

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Activity

  1. added this to the 10.0.0 milestone on Nov 8, 2024
  2. dotnet-policy-service commented on Nov 8, 2024

    @dotnet-policy-service
    Contributor

    Tagging subscribers to 'arch-wasm': @lewing
    See info in area-owners.md if you want to be subscribed.

  3. self-assigned this
    on Nov 8, 2024
  4. modified the milestones: 10.0.0, Future on Feb 19, 2025
  5. removed
    Known Build ErrorUse this to report build issues in the .NET Helix tab
    on Aug 14, 2025
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