When trying to sign android package that has been built to a path that contains spaces, androiddeployqt exists with exit code 15.

Signing itself actually seems to succeeds just fine, so it is probably just the QFile::remove() call at the end of signPackage() that is failing. At least, the unsigned apk still remains there and there are no errors in the output so that seems to be the only possibility.

Can be reproduced with any example, just set shadow build path to something that contains spaces and set it to sign the package.