Build stuck on "build native binary with IL2CPP" and show these errors

Hello,

I'm trying to create a build for the WebGL platform. Unfortunately, at the end of creation, everything is stuck on "build native binary with IL2CPP".

Unity then throw these errors into the console:

 Failed running "C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" "C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc" @"C:\Users\TPN~1\Desktop\TVORBA~1\SPACEM~1\Assets\..\Temp\emcc_arguments.resp"
  
  stdout:
  stderr:ERROR:root:C:\Users\Štěpán\Desktop\TVORBA HER\Spaceminator\Temp\StagingArea\Data\Native\build.bc: No such file or directory ("C:\Users\Štěpán\Desktop\TVORBA HER\Spaceminator\Temp\StagingArea\Data\Native\build.bc" was expected to be an input file, based on the commandline arguments provided)
  UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
  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 (BuildPostProcessArgs args, Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:408)
  UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:451)
  UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:916)
  UnityEditor.PostprocessBuildPlayer.Postprocess (BuildTargetGroup targetGroup, BuildTarget target, System.String installPath, System.String companyName, System.String productName, Int32 width, Int32 height, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.BuildReporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:272)
  UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
  Error building Player: 3 errors
  Build completed with a result of 'Failed'
  UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
  
  UnityEditor.BuildPlayerWindow+BuildMethodException: 4 errors
    at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (BuildPlayerOptions options) [0x0020e] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:181 
    at UnityEditor.BuildPlayerWindow.CallBuildMethods (Boolean askForBuildLocation, BuildOptions defaultBuildOptions) [0x00065] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:88 
  UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

I use a font where I can use characters for my native language - ě,š,č,ř etc.

Can it be that? If so, how can you solve this problem?

I'll be happy for any help or tip :)

Thanks