ManytoMany relationship with equipment table

Hello all! I'm facing something weird. I try to create a relationship between my model car and equipment. I create my cars and equipments table, my car_equipment pivot table :

        Schema::create('equipments', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->timestamps();
        });

       Schema::create('car_equipment', function (Blueprint $table) {
            $table->foreignId('car_id')->constrained();
            $table->foreignId('equipment_id')->constrained();
        });

But when I migrate, I have this error:

"Failed to open the referenced table 'equipment' (Connection: mysql, SQL: alter table `car_equipment` add constraint `car_equipment_equipment_id_foreign` foreig
n key (`equipment_id`) references `equipment` (`id`))"

II should name my table equipment and every things work except that when I dump $car->equipments it's return null. I have to make $car->equipments()->get() to acces to my equipments.

class Car extends Model {
...
public function equipments():BelongsToMany { return $this->belongsToMany(Equipment::class); }
...
}

Someone have an idea ?

Thx in advance

Methos