zoom integration MacsiDigital / laravel-zoom Call to a member function get() on null

Question

i am using MacsiDigital/laravel-zoom package but the problem is Call to a member function get() on null i dont know why and i made everything correct

i am using MacsiDigital/laravel-zoom package but the problem is Call to a member function get() on null i dont know why and i made everything correct

here is my code

this is my create blade

<form method="post" action="{{ route('online_classes.store') }}" autocomplete="off">
                @csrf
                <div class="row">
                    <div class="col-md-4">
                        <div class="form-group">
                            <label for="Grade_id">{{ trans('Students_trans.Grade') }} : <span
                                    class="text-danger">*</span></label>
                            <select class="custom-select mr-sm-2" name="grade">
                                <option selected disabled>{{ trans('Parent_trans.Choose') }}...</option>
                                @foreach ($Grades as $Grade)
                                    <option value="{{ $Grade->id }}">{{ $Grade->name }}</option>
                                @endforeach
                            </select>
                        </div>
                    </div>

                    <div class="col-md-4">
                        <div class="form-group">
                            <label for="Classroom_id">{{ trans('Students_trans.classrooms') }} : <span
                                    class="text-danger">*</span></label>
                            <select class="custom-select mr-sm-2" name="class">

                            </select>
                        </div>
                    </div>

                    <div class="col-md-4">
                        <div class="form-group">
                            <label for="section_id">{{ trans('Students_trans.section') }} : </label>
                            <select class="custom-select mr-sm-2" name="section_id">

                            </select>
                        </div>
                    </div>
                </div><br>

                <div class="row">

                    <div class="col-md-4">
                        <div class="form-group">
                            <label>عنوان الحصة : <span class="text-danger">*</span></label>
                            <input class="form-control" name="topic" type="text">
                        </div>
                    </div>

                    <div class="col-md-4">
                        <div class="form-group">
                            <label>تاريخ ووقت الحصة : <span class="text-danger">*</span></label>
                            <input class="form-control" type="datetime-local" name="start_time">
                        </div>
                    </div>
                    <div class="col-md-4">
                        <div class="form-group">
                            <label>مدة الحصة بالدقائق : <span class="text-danger">*</span></label>
                            <input class="form-control" name="duration" type="text">
                        </div>
                    </div>
                </div>
                <button class="btn btn-success btn-sm nextBtn btn-lg pull-right"
                    type="submit">{{ trans('Students_trans.submit') }}</button>
</form>

and this is my fillable model

    <?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class online_class extends Model
{
    protected $fillable = [
        'grade_id',
        'classroom_id',
        'section_id',
        'topic',
        'start_at',
        'duration',
        'user_id',
        'meeting_id',
        'start_url',
        'join_url',
        'password',
    ];

    public function user(){
        return $this->belongsTo(User::class,'user_id');
    }
}

and this is my store method in controller

public function store(Request $request)
{
    
    
    $user = Zoom::user()->first();
    
    $meeting = Zoom::meeting()->make([
        'topic' => $request->topic,
        'duration' => $request->duration,
        'password' => $request->password,
        'start_time' => $request->start_time,
        'timezone' => 'Africa/Cairo',
    ]);
    
    $meeting->settings()->make([
        'join_before_host' => false,
        'approval_type' => 1,
        'registration_type' => 2,
        'enforce_login' => false,
        'waiting_room' => false,
    ]);
    

      
      online_class::create([
        'grade_id' => $request->grade,
        'classroom_id' => $request->class,
        'section_id' => $request->section_id,
        'topic' => $request->topic,
        'start_at' => $request->start_time,
        'duration' => $meeting->duration,
        'user_id' => Auth::user()->id,
        'meeting_id' => $meeting->id,
        'start_url' => $meeting->start_url,
        'join_url' => $meeting->join_url,
        'password' => $meeting->password,
    ]);
    
    
    return $user->meetings()->save($meeting);
}