Assertion failed at Object.getTargetThreadForEventCallback

[chxngeme]

Hi, I'm trying to compile a C++ SDL2 game using Emscripten, managed to do so, but there is an error when I try to run it:

Uncaught RuntimeError: Aborted(Assertion failed)
    at abort (fheroes2.js:768:11)
    at assert (fheroes2.js:421:5)
    at Object.getTargetThreadForEventCallback (fheroes2.js:7133:13)
    at registerMouseEventCallback (fheroes2.js:9925:31)
    at _emscripten_set_mousemove_callback_on_thread (fheroes2.js:9986:14)
    at Emscripten_RegisterEventHandlers (fheroes2.wasm:0xd03494)
    at Emscripten_CreateWindow (fheroes2.wasm:0xd046d9)
    at SDL_CreateWindow (fheroes2.wasm:0xd06aa7)
    at invoke_iiiiiii (fheroes2.js:11732:36)
    at (anonymous namespace)::RenderEngine::allocate(fheroes2::ResolutionInfo&, bool) (fheroes2.wasm:0xb9c55a)

How to fix this stuff?

[chxngeme]

It actually doesn't matter and may be ignored