Upload file type mp4,mp3,pdf,docx

Hello guys I want to ask if my way of uploading files with type mp4, mp3, pdf.docx is correct

after i try to run it i got an error message The files must be a file of type: file / pdf, docx, video / mp4, audio / mp3.

Thank you for the help

$this->validate($request,[ 'user_id' => 'required', 'name' => 'required|string|max:255', 'email' => 'required|string|email|max:255|unique:bookings', 'phone' => 'required', 'subject' => 'required', 'do_date' => 'required', 'files' => 'required|file|mimetypes:file/pdf,docx,video/mp4,audio/mp3',

    ]);

$formInput = $request->except('files');

    $data = $request->files;

    if($data){

        $dataName   = $data->getClientOriginalName();
        $data->move('user/bookings/', $dataName);
        $formInput['files']     = $dataName;
    }

    Booking::create($formInput);

    flash('Youre request success send')->success();

    return redirect()->back();