[Wasm] Failed to load application interp.c:2551, condition `is_ok (error)' not met

[giraudremy]

Hi everyone,

I'm encountering an issue with my Wasm project after publishing it on my Windows machine targeting .NET 8 with the following settings:

<PropertyGroup Condition="'$(Configuration)'=='Release'">
    <WasmShellMonoRuntimeExecutionMode>InterpreterAndAOT</WasmShellMonoRuntimeExecutionMode>
    <WasmShellEnableEmscriptenWindows>true</WasmShellEnableEmscriptenWindows>
    <WasmShellEnableEmccProfiling>true</WasmShellEnableEmccProfiling>
    <WasmShellEmccLinkOptimization>true</WasmShellEmccLinkOptimization>
    <WasmShellEmccLinkOptimizationLevel>Level3</WasmShellEmccLinkOptimizationLevel>
    <WasmShellCompressionLayoutMode>InPlace</WasmShellCompressionLayoutMode>
    <WasmShellBrotliCompressionQuality>9</WasmShellBrotliCompressionQuality>
</PropertyGroup>

When I run dotnet serve on Windows (dotnet serve --directory bin\Release\net8.0\publish\wwwroot --port 5050), the application works fine.

However, on my production server running Debian 12 with Nginx, I get the following error when launching the application:

logging.ts:119 Error: [MONO] * Assertion at /__w/Uno.DotnetRuntime.WebAssembly/Uno.DotnetRuntime.WebAssembly/runtime/src/mono/mono/mini/interp/interp.c:2551, condition `is_ok (error)' not met, function:init_jit_call_info, Attempting to JIT compile method '(wrapper other) void object:gsharedvt_out_sig (object&,object&,int&,intptr)' while running in aot-only mode. See https://docs.microsoft.com/xamarin/ios/internals/limitations for more information.
 assembly:<unknown assembly> type:<unknown type> member:(null)

    at mono_wasm_stringify_as_error_with_stack (logging.ts:95:18)
    at mono_wasm_trace_logger (logging.ts:119:27)
    at wasm_trace_logger (dotnet.native.wasm:0xe0c24)
    at eglib_log_adapter (dotnet.native.wasm:0x428873f)
    at monoeg_g_logv_nofree (dotnet.native.wasm:0x4284db2)
    at monoeg_assertion_message (dotnet.native.wasm:0x4284e9d)
    at do_jit_call (dotnet.native.wasm:0x4262fd0)
    at mono_interp_exec_method (dotnet.native.wasm:0x425650d)
    at interp_runtime_invoke (dotnet.native.wasm:0x426439b)
    at mono_jit_runtime_invoke (dotnet.native.wasm:0x431d268)

I don’t understand this message and I’m not sure if it’s related to my environment or the way I’m generating the application. I’ve also tried running it via WSL with the same result.

Any help or guidance would be greatly appreciated!

Thank you!

[jeromelaban]

Thanks for the report. This is an error generated by the .NET runtime itself. Unless you can provide a repro, there's not much we can do. You may want to adjust parts of your code to determine what is causing this issue, in order to find a workaround.

[giraudremy]

Ok thank for answer, I will investigate and try to isolate the issue.