I encountered some issues while preparing to release the extension application, and I am currently in the stage of verifying the extension.But some errors were encountered as follows:

This is my file configuration status:

I tried to obtain the manifest.txt file based on the document content.
Complete all the fields in Section 2 Extension Details of this Submission Portal.
Download the completed manifest.txt by clicking the link in the helptext.
To be honest, I don't know the difference between manifest.json and manifest.txt.,also I can't find the link in "helptext" either.
How can I obtain this file?Also, what are XML files and META-INF folders?
BR
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tianxing liu
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