Laravel Method Illuminate\Validation\Validator::validateVideo does not exist - laravel

Question

I'm trying to store a video file alongside some image and texts but i keep getting the error and i can't seem to get it.
This is the code:
public function store(HeaderFormRequest $request)
{
$validatedData = $request->validated();
if($request->hasFile('image')){
$file = $request->file('image');
$ext = $file->getClientOriginalExtension();
$filename = time() .'.'. $ext;
$file->move('uploads/header/', $filename);
$validatedData['image'] = "uploads/header/$filename";
}
if ($request->hasFile('video')){
$file = $request->file('video');
$ext = $file->getClientOriginalExtension();
$filename = time() .'.'. $ext;
$file->move('uploads/header/', $filename);
$validatedData['video'] = "uploads/header/$filename";
}
$validatedData['status'] = $request->status == true ? '1':'0';
Header::create([
'title' => $validatedData['title'],
'description' => $validatedData['description'],
'small_description' => $validatedData['small_description'],
'meta_description' => $validatedData['meta_description'],
'image' => $validatedData['image'],
'video' => $validatedData['video'],
'status' => $validatedData['status'],
]);
return redirect('admin/header')->with('message', 'Header added successsfully');
}
This is the code for the form request (HeaderFormRequest)
return [
'title' => [
'required',
'string',
'max:255',
],
'description' => [
'required',
'string',
'max:255',
],
'small_description' => [
'required',
'string',
'max:255',
],
'meta_description' => [
'required',
'string',
'max:255',
],
'image' => [
'nullable',
'image',
'mimes:jpg,jpeg,png',
],
'video' => [
'nullable',
'video',
'mimetypes:video/m4v,video/avi,video/flv,video/mp4,video/mov',
],
'status' => [
'nullable',
],
];