Column not found: 1054 Unknown column 'students_id' in 'where clause' (SQL: select * from `students_subjects` where `students_id` = 69)

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'students_id' in 'where clause' (SQL: select * from students_subjects where students_id = 71) Student Controller

public function store(Request $request)
{
    $input =$request->all();
    $user  =Auth::user();


   if ($file = $request->file('photo_id')){
       $name = time().$file->getClientOriginalName();
       $file->move('images',$name);
       $photo = Photos::create(['file'=>$name]);

   $input['photo_id']=$photo->id;

   }
   $student = $user->student()->create($input);

   if ($request->subject_id){
    $student->subject()->sync($request->subject_id);
   }


    dd($student);
    return redirect('admin/students');

    //
}

Student_Subject_table.php

 public function up()
{
    Schema::create('students_subjects', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->unsignedBigInteger('student_id');
        $table->unsignedBigInteger('subject_id');

        $table->foreign('student_id')->references('id')->on('students');

        $table->foreign('subject_id')->references('id')->on('subjects');

        $table->timestamps();
    });
}

Students Model

class Students extends Model
  {
protected $table = 'students';

protected $fillable=['user_id','FullName','age','address','father_ID','photo_id','class_id'];

public function subject(){
    return $this->belongsToMany(Subjects::class);
 }
}

Subjects Modal

 class Subjects extends Model
{

protected $table = 'subjects';

protected $fillable = ['name','user_id'];
//

public function student()
{
    return $this->belongsToMany(Students::class);

    }
//
  }

create.blade.php

<div class="form-group form-check form-check-inline">
            <span class="caption-subject font-dark bold uppercase">Subject :</span>
        @foreach($subjects as $subject)
                <input type="checkbox" value="" name="subject_id[]" class="form-check-input">
                <label class="form-check-label "></label>
            @endforeach
        </div>

via Chebli Mohamed