Correct image validate (laravel)

I have an image field that should not be required, but should be limited to possible file types
But, if I validate mimes, submitting the form without an image does not work

request()->validate([
       'name' => ['required'],'name' => ['required'],
       'type' => ['required'],'master_id' => ['required'],
       'description' => ['required'],
       'whom_id' => ['required'], 'short_description' => ['required'],
       'image' => ['mimes:jpg,bmp,png','max:3072'],
        ]);

if(request()->image){
        $ext = request()->file('image')->extension();//Получение расширения файла
        $path = request()->file('image')->storeAs('image', $course->id.'mainImage.'.$ext);
        $course->image = $path;
 }

>Solution :

Normally for standard form submits, the answer is sometimes, however you’re submitting by Vue, so it required nullable.

    'image' => ['nullable', 'mimes:jpg,bmp,png','max:3072'],

Mind the Note On Optional Fields.