Null safety setup

With the new flutter update, if your flutter version is 3.10.1 and more, you don't need null safety sound, you need go run -> Edit Configurations, field "Additional run args" removed params "--no-sound-null-safety"

If your flutter version is less than 3.10.1, do the steps below

It is also necessary to add a "null safety" setting to the project.

Click on run -> Edit configurations ->

And add into the line “Additional run args” string: “--no-sound-null-safety”