webgl failed to build my project

Hello i'm using 2018.3.2f1 personal
i used to build prototype of my project (unity 2D) with unity 2017 without any problem
Now i can build an empty project but not mine anymore.. maybe there are scripts or something making an error..
I try to build in asset folder (unity don't want), in a folder at the root of the project (D:\Unity\UsineWeb\ ) and another time outside the folder c:\my project. all tests with only 1 result : folder empty and this message
Unity console :

Code (CSharp):

1. FileNotFoundException: D:\Unity\UsineWeb\Temp\StagingArea\Data\linkresult_wasm\build.wasm does not exist
2. System.IO.File.Copy (System.String sourceFileName, System.String destFileName, System.Boolean overwrite) (at <ac823e2bb42b41bda67924a45a0173c3>:0)
3. System.IO.File.Copy (System.String sourceFileName, System.String destFileName) (at <ac823e2bb42b41bda67924a45a0173c3>:0)
4. UnityEditor.WebGL.WebGlBuildPostprocessor.AssembleOutput (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:665)
5. UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:956)
6. UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at C:/buildslave/unity/build/Editor/Mono/Modules/DefaultBuildPostprocessor.cs:27)
7. 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 C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:286)
8. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

Code (CSharp):

1. Build completed with a result of 'Succeeded'
2. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
3.  

So pls take a look at my log and tell me how i can fix this problem..
thanks by advance

 

there isn't a unity's member to enlight me and help me make webgl run again with 2018 unity ?!

I make a test by using the assets from unity 2018 version with webgl not working and import all in a new 2017 instance: all prefab are missing, all stages are in a mess BUT i can create a webgl build and play it ! So... I ether start from scratch a unity 2017 version of my game... or waiting for a kindly answer from unity's members to move forward !

As i said, i can build with webgl an empty new project with 2018 version.. so it seams it's a problem with one or more scripts i'm using !
I uploaded the log in my first post.

Thanks by advance for your help

 

there isn't any unity's members or forum members knowing this problem with a solution?

 

I have the same problem 1: 1. Please write, how did you overcome it?

 

Done!
Simply, reinstall Win10.