mediawiki-skin-greystuff_1.2.5~git20220922.60bda8c-2.dsc: Refers to non-existing file 'mediawiki-skin-greystuff_1.2.5~git20220922.60bda8c.orig.tar.gz'
Perhaps you need to include the file in your upload?
If the orig tarball is missing, the -sa flag for dpkg-buildpackage will be your friend.
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