You may occasionally see a parse error notice when an app doesn’t install properly on an Android smartphone. The message itself is not very detailed, and many different issues can lead to it. The essential thing to remember is that the App installed on your phone was unsuccessful because of an issue. Follow these steps to fix the error: If you have a corrupted APK file, re-download the APK. Get the APK from a different source. The Parse Error Issue Can Be Fixed by Updating Your Android Version. Switch on “Unknown Sources” on your Android device. To fix the package error, turn on USB debugging. That’s how you can fix the error very smoothly.