Exception: There is no permission named view countries for guard web.

[4n70w4]

May be by default need to use [denied] instead throw exception if permission not declared.

[fissible]

There is no permission named ACCESSfor guardweb``

You are able to choose the guard when adding a permission, but if you choose one that is not the default you will be the above error when you attempt to give a Permission to a Role (on the Update Role screen).

[4n70w4]

The exception should be catch, and not throw an exception in the application.
Plugins should not break the main application.