Answers for "Cannot run with sound null safety, because the following dependencies don't support null safety: - package:custom_navigator"

Error: Cannot run with sound null safety, because the following dependencies don't support null safety:

flutter run --no-sound-null-safety

Cannot run with sound null safety, because the following dependencies don't support null safety:

In Android Studio:

Run --> Edit Configurations --> Add Additional Run args --> --no-sound-null-safety