Unity released WebGL version cannot find Unity's own class

Could not produce class with ID XXX error occurred while loading asset bundle

Under the asset folder, build a link XML with the following content:

<?xml version= "1.0" encoding= "Utf-8"?>
<linker>
<assembly fullname= "Unityengine" >
<type fullname= "Unityengine.spherecollider" preserve= "All"/>
<type fullname= "Unityengine.audiosources" preserve= "All"/>
<type fullname= "Unityengine.reflectionprobe" preserve= "All"/>
<type fullname= "Unityengine.avatar" preserve= "All"/>
<type fullname= "Unityengine.animator" preserve= "All"/>
<type fullname= "unityengine.physicmaterial" preserve= "All"/>
<type fullname= "Unityengine.capsulecollider" preserve= "All"/>
</assembly>
<assembly fullname= "System" >
<type fullname= "System.Exception" preserve= "All"/>
</assembly>
</linker>

On this site https://docs.unity3d.com/Manual/ClassIDReference.htm l find the corresponding script based on ClassID

Unity released WebGL version cannot find Unity's own class