192.168.13.11 is currently unable to handle this request. HTTP ERROR 500 in laravel

it's work fine in my local environment when I upload it in to the server I can access the home page but when I submit the form it throw the following error

This page isn’t working

192.168.13.11 is currently unable to handle this request.
HTTP ERROR 500

and also I can access the route when I manually write in browser header, but cant access when submit the form

via Chebli Mohamed