"I have an error when trying to generate the APK of my application. The error is as follows: App Inventor is unable to compile this project
The compile error output was: [ReadBuildInfo] Starting Task [ReadBuildInfo] Task Errored
App Inventor does not allow me to generate the APK of my application. Any help?"
You have a lot of Extensions and it is possible that internal dependencies are clashing.
Save a back-up of your Project (.aia) and then experiment by deleting an extension, test compile, delete another, test and so on. The object of this is to determine if there is a clash. If you find there is, you will probably have to do without one of the extensions.