issue when have scopes

------
**OS**: darwin
**Invoker Version**: 2.8.0
**Laravel Version**: 8.44.0
**Local project**: unknown
**PHP Binary**: /usr/local/bin/php
**Route**: /home

**Error**:
```
ErrorException

Attempt to read property "doctor" on null

at doctors.badinansoft.com/app/Models/AllAppointment.php:50
46▕
47▕ protected static function boot():void
48▕ {
49▕ parent::boot();
➜ 50▕ if(auth()->user()->doctor)
51▕ {
52▕ static::addGlobalScope('appointments', function (Builder $builder) {
53▕ $builder->where('doctor_id', auth()->user()->doctor->id);
54▕ });

1 doctors.badinansoft.com/app/Models/AllAppointment.php:50
Illuminate\Foundation\Bootstrap\HandleExceptions::handleError()

+2 vendor frames 
4 phar:///tmp/ploi_invoker.phar/src/Factories/ModelItem.php:20
Illuminate\Database\Eloquent\Model::__construct()
```