I'm seeing this error on a testing server:

Filament\FilamentManager::getUserName(): Argument #1 ($user) must be of type Illuminate\Database\Eloquent\Model|Illuminate\Contracts\Auth\Authenticatable, null given, called in /home/forge/mysite.ie/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php on line 355 (View: /home/forge/mysite.ie/vendor/stechstudio/filament-impersonate/resources/views/components/banner.blade.php) (View: /home/forge/mysite.ie/vendor/stechstudio/filament-impersonate/resources/views/components/banner.blade.php) (View: /home/forge/mysite.ie/vendor/stechstudio/filament-impersonate/resources/views/components/banner.blade.php) (View: /home/forge/mysite.ie/vendor/stechstudio/filament-impersonate/resources/views/components/banner.blade.php) (View: /home/forge/mysite.ie/vendor/stechstudio/filament-impersonate/resources/views/components/banner.blade.php)

I was impersonating a user when I re-migrated the database.

I think it's to do with session cookies. If I open an incognito browser then everything is fine.

Not sure what the solution is...