what errori am facing this is one of them and thr are some other errors also major is it stops working and immediately gets close takes time to run the app takes long time if i try to publish the app.
This could happen because depending upon the size of the app, sometimes it takes time to run your app and your internet connection should be well checked before running the app. If your app doesn't save your work after work is done, you should commit every time when your work is done.
Ref: This link might help you with your error. https://forum.mendix.com/link/questions/92535