ASP.NET Core MVC project does not display Unity WebGL content

I am developing an ASP.NET Core MVC project and I need to embed a Unity WebGL game into one of the pages. I tried looking in a lot of places online but all of them use the older versions of Unity and thus the contents of the WebGL build look different.

The WebGL build works fine by itself (when I press Build and Run in Unity), but does not work when I try to put it in my MVC.

What I tried so far:

Changing the Configure method to use static content:

public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { 
    if (env.IsDevelopment()) { 
        app.UseDeveloperExceptionPage(); 
    } else { 
        app.UseExceptionHandler("/Home/Error"); 
        // The default HSTS value is 30 days. You may want to change this for production scenarios, see https:// 
        app.UseHsts(); 
    }
    
    app.UseHttpsRedirection();

    app.UseDefaultFiles(); 
    app.UseFileServer(); 
    StaticFileOptions options = new StaticFileOptions(); 
    FileExtensionContentTypeProvider contentTypeProvider = (FileExtensionContentTypeProvider)options.ContentTypeProvider ?? new FileExtensionContentTypeProvider(); 
    contentTypeProvider.Mappings.Add(".unityweb", "application/octet—stream"); 
    options.ContentTypeProvider = contentTypeProvider; app. UseStaticFiles(options); 

    app.UseRouting(); 
}

Configure Method:

Adding web.config file

<system.webServer>
    <staticContent>
        <remove fileExtension=".unityweb" I>
        <mimeMap fileExtension=".unityweb" mimeType="application/octet—stream" />
    </staticContent>
</system.webServer> 

The web.config file:

And placing the Build and index.html from the WebGL build in wwwroot:

When I build, it opens the index.html file but with nothing in the box where the game is supposed to play:

The errors in the Console say that the file was not found even though it is in the Build folder: errors directory

index.html file: index.html

Any help would be appreciated!

Thank you!