Unable to Compile MIT Appinventor App to APK : When I try to compile my App Inventor 2 app to APK, I get the following message:

[This is the error message:][1]

Also here is my code:

[This is my code:][2]


What should I do?

Please help as soon as possible.


Please do not steal my code. :)


  [1]: https://i.stack.imgur.com/m2WSj.jpg
  [2]: https://i.stack.imgur.com/DEemp.jpg