i Faced this problem when i configure Firebase?

step 1: This is my controller code. firebase file and firebase DB are connected properly. but when run in postman i got 500 error but I am new on firebase show I don't know how can I resolved this

 public function ride_confirm(Request $request)
{
    $input = $request->all();
    $validator = Validator::make($input, [
        'km' => 'required',
        'vehicle_type' => 'required',
        'customer_id' => 'required',
        'promo' => 'required',
        'country_id' => 'required',
        'pickup_address' => 'required',
        'pickup_date' => 'required',
        'pickup_lat' => 'required',
        'pickup_lng' => 'required',
        'trip_type' => 'required'
    ]);
    if ($validator->fails()) {
        return $this->sendError($validator->errors());
    }
    
    $input['pickup_date'] = date("Y-m-d H:i:s", strtotime($input['pickup_date']));
    $current_date = $this->get_date($input['country_id']);
    $interval_time = $this->date_difference($input['pickup_date'],$current_date);
    if($interval_time <= 30){
        $input['booking_type'] = 1;
        $input['status'] = 1;
    }else{
        $input['booking_type'] = 2;
        $input['status'] = 2;
    }
    $factory = (new Factory)->withServiceAccount(config_path().'/'.env('FIREBASE_FILE'));
    $factory = (new Factory())->withDatabaseUri(env('FIREBASE_DB'));
    
    $database = $factory->createDatabase();
    
    $drivers = $database->getReference('/vehicles/'.$input['vehicle_type'])
                 ->getSnapshot()->getValue();
}

I faced this error when I run this code ...

via Chebli Mohamed