Seeking Help with Manifest Version Error for Firefox Add-on Submission

I’m currently developing a new add-on for the Mozilla Firefox browser. I’ve successfully built the extension, but when I attempt to submit it to the Mozilla Add-ons store , I encounter an error message indicating an issue with the manifest version. Could you please provide guidance on troubleshooting and resolving this error?

Paste here the error.
You can test it also locally - install web-ext tool, then navigate to your sources directory and execute web-ext lint
Ten paste here the errors it prints.