Question Can't build for Webgl anymore

Yesterday i was making some builds for webgl, and had some issues with FMOD, an audio plugin.

I made some dev builds to see what the error was exactly, but after like 3 dev builds unity refused to build to WebGL, and always gives me build failed.

I get the same errors with unity version 2019.2.13f1 and unity version 2019.3.13f1

These are the errors:

Code (CSharp):

1. Failed running "C:/Program Files/Unity/Hub/Editor/2019.3.13f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "C:/Program Files/Unity/Hub/Editor/2019.3.13f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\Emscripten\emcc" @"D:\slashy ninja update version\slashy ninja\Assets\..\Temp\emcc_arguments.resp"
2.  
3. stdout:
4. stderr:error: Linking globals named '_ZTVN4FMOD19AsyncCommandPrinterE': symbol multiply defined!ERROR:root:Failed to run llvm optimizations:
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8. UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
9.   at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x002bb] in <480b5a3bd3214ce5831f6dd8c68fdc55>:0
10.   at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in <480b5a3bd3214ce5831f6dd8c68fdc55>:0
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I saw other people having similar problems, and tried all kinds of solutions:

reimporting all assets, saving build in another place, running unity as admin, modifying a file called "emscripten.config" (stack_size).

I even duplicated my project and build it from unity 2019.3.13f1

I got no idea what to do next, since the errors are a bit too advanced for me.

 

UPDATE: it was an FMOD Issue, solved it by reinstalling the Assets