Hello, the next problem I have occurs when I want to export my WebGL Project so I can use it in Web Format. I am exporting from Unity 3D to WebGL with the parameters: Explicitly thrown Exceptions Only, Throw, Gzip, Data Caching. I generate the build, make the 3 files, 1 zip of no more than 40MB and enter it in Upload Files of Itch.io.

The error when setting the corresponding parameters:

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The funniest thing is that the format only changes when I only upload the Index.html file.

Your zip file must contain the two folders (Build and Template Data) and the index.html file.

Check that you've marked all the right boxes on your project page:

Kind of Project: HTML

Once you upload the file tick the block: This file will be played in the browser