Can't export game to WebGL??? | Failed running InternalCallRegistrationWriter.exe ?

If i export my game to an executable everything works fine. But if i want to export my game to Unity WebGL i get 1 error:

Failed running C:\Program Files\Unity\Hub\Editor\2018.2.8f1\Editor\Data\Tools/InternalCallRegistrationWriter/InternalCallRegistrationWriter.exe

I reinstalled Unity once and tried it again. Same error.

Can somebody help me?

Thanks in Advance!

This ist the Full Error:

Failed running C:\Program Files\Unity\Hub\Editor\2018.2.8f1\Editor\Data\Tools/InternalCallRegistrationWriter/InternalCallRegistrationWriter.exe -output="C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\UnityICallRegistration.cpp" -summary="C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\ICallSummary.txt" -assembly="C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.AnimationModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.AudioModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.CoreModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.IMGUIModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.Physics2DModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.PhysicsModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.SharedInternalsModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.TextRenderingModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.UIModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.UnityWebRequestModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.UnityWebRequestWWWModule.dll;C:\Users\janni\Documents\Dateien Jannik\Projects ; (Unity)\Legend Brawl\Legend Brawl\Temp\StagingArea\Data\Managed\tempStrip\UnityEngine.dll"