Unable to guess the mime type as no guessers are available (Did you enable the php

Unable to guess the mime type as no guessers are available (Did you enable the php

原因是没有开启php的php_fileinfo扩展，开启即可。

extension=php_fileinfo.dll

找到php.ini文件，搜索到php_fileinfo，去掉前面的分号，然后重启服务器apache。nginx下同理。

如果还有上述报错请查看

需要重启下 php artisan serve 

再次上传即可