Error 1101 in old app that's now occurring in new builds

I have an app that I made years ago (last update was Dec 2019) and all works well. Original file can be passed between android phones and no problems.

I made a new apk from the same project and now everything is going wrong. My latest problem is "Error 1101: Unable to get a response with the specified URL". The URL is unchanged and the older downloads work.

I can only assume a change has happened in the MIT app inventor site, just like the other problems I've adjusted for. Any suggestions?


Apparently we are not many with the same problem, because MIT App Inventor Developers have not solved it yet :frowning_face: