Feedback WebGL builds break after upgrading from 2019.3.0f6 to 2019.3.1f1

I've just upgraded my WebGL project from Unity 2019.3.0f6 to 2019.3.1f1 and unfortunately my builds are now breaking. When I try to build and run, I get the following errors:

Failed running "C:/Users/ElnuDev/Desktop/Game Files/2019.3.1f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "C:/Users/ElnuDev/Desktop/Game Files/2019.3.1f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten\emcc" @"C:\Users\ElnuDev\Desktop\Game Files\Tank\Assets\..\Temp\emcc_arguments.resp"



Exception: Failed building WebGL Player.

UnityEditor.WebGL.ProgramUtils.StartProgramChecked (System.Diagnostics.ProcessStartInfo p) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/ProgramUtils.cs:48)

UnityEditor.WebGL.WebGlBuildPostprocessor.EmscriptenLink (UnityEditor.Modules.BuildPostProcessArgs args, System.Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:445)

UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:495)

UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:930)

UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <c10752821eec4acbb89ccd53fbbc5e27>:0)

UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <c10752821eec4acbb89ccd53fbbc5e27>:0)

UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()



Build completed with a result of 'Failed'

UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()



UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors

  at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00275] in <c10752821eec4acbb89ccd53fbbc5e27>:0 

  at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in <c10752821eec4acbb89ccd53fbbc5e27>:0 

UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

Any thoughts? Thanks in advance! I'm going to try making an empty 2019.3.1f1 WebGL project and see if I can replicate the issue issue.

 

Okay, interesting. Making an empty 2019.3.1f1 WebGL project and building it doesn't cause any issues. So, it must be something in my project, but what...? The extra packages I've installed are Universal RP 7.1.8 and Input System 1.0.0 preview.5. Any thoughts where the problem is coming from? I'm going to try doing a full project reimport and see if that fixes the issue, fingers crossed.

 

Phew! I full reimport fixed the issue. Now back to development!

 

I'm getting the issue again, but now reimport isn't fixing the issue, unfortunately.

 

ElnuDev could you solve the issue? i´m stucked in same error

 

It was a while ago, so I don't really remember how I resolved it. Sorry I can't help more! Anyhow, good luck