Laravel无法上传文件

Question

I build a Laravel Application. I have a file-upload-form where users can upload images or videos.

I made The following settings in th php.ini file

upload_max_filesize = 32M 
post_max_size = 32M

My validation rules:

$mime = $request->file("file")->getClientOriginalExtension();
if ($mime == "png" || $mime == "jpg" || $mime == "jpeg") {
    $rules["file"] = "required|file|mimes:jpeg,jpg,png|max:1024";
} elseif ($mime == "mp4" || $mime == "webm") {
    $rules["file"] = "required|file|mimes:webm,mp4|max:32768";
}

I handle the upload with

$request->file("file")->store("uploads");

Following Scenarios:

• When I upload a image everything works well
• When I upload a really small video (500kb) everything works well
• When I upload a 5MB video I get the following ErrorMessage

The file failed to upload.