NEED SOLUTION - Fatal Exception: java.lang.NullPointerException

[Om25091210]

Fatal Exception: java.lang.NullPointerException: Can't toast on a thread that has not called Looper.prepare()
at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:157)
at android.widget.Toast.getLooper(Toast.java:179)
at android.widget.Toast.(Toast.java:164)
at android.widget.Toast.(Toast.java:154)
at www.sanju.motiontoast.MotionToast$Companion.darkColorToast(MotionToast.kt:978)
at com.aryomtech.dhitifoundation.public_notes.create_announcement$3.run(create_announcement.java:653)
at java.util.TimerThread.mainLoop(Timer.java:562)
at java.util.TimerThread.run(Timer.java:512)