"You uploaded a file that is not a well-formed zip archive" AAB upload issue.

Hello, we are trying to update one of our currently existing games and (because we now have to upload .aab files as of August 2021) we created one and attempted to upload. However, upon uploading an error displays stating: You uploaded a file that is not a well-formed zip archive.

This was one of our games that that was previously uploaded with an .apk in May 2021 successfully. It is not opted in to google signing due to the fact that the .apk was already signed with our keystore previously.

We are trying to figure out why this error message is appearing when trying to upload our updated .aab even though before it took an .apk before in May.

If anyone can help with this please let me know.

 

Hello! Have you solved this issue eventually?

 

I believe we were dragging and dropping / uploading from Dropbox (from the cloud). Every time we did, we got that error. Then we downloaded the file from Dropbox (making it local) and uploaded that file and it went through successfully. I don't remember if (for this situation) we made an .apk and uploaded, or attempted to upload the .aab file. I think old games still took the .apk, but try the .aab if it doesn't work.

 

My problem was diffrent, but I got to solve it thankfully) I solved my problem by deleting Library folder in the project. Then unity recreated that folder and I uploaded .aab with no problems. Don't know what was the issue, I guess I messed smth up)