Compatibility Bugfix

What's Changed

• Prevent MissingAttributeException for guard_name by @ejunker in https://github.com/spatie/laravel-permission/pull/2216

New Contributors

• @ejunker made their first contribution in https://github.com/spatie/laravel-permission/pull/2216

Full Changelog: https://github.com/spatie/laravel-permission/compare/5.5.8...5.5.9