hold android.permission.SCHEDULE_EXACT_ALARM or android.permission.USE_EXACT_ALARM to set exact alarms., null)

I face this problem in my flutter project.

I solved using this in the manifest file and it was work fine.

<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>   

   <uses-permission android:name="android.permission.USE_EXACT_ALARM"/>