Missing required parameter for [Route: nova.login]

I tried to translate locale from English to German(de) language by adding \App::getLocale() or app()->getLocale() function. This was working fine in nova/en/login page initially but when I go to login it gives me this error "Missing required parameter for [Route: nova.login] [URI: nova/{language}/login] [Missing parameter: language].". I rolled back to serve the purpose of my task which was pending but still this error showing in login page and stuck in "nova/en" route. I globally searched \App::getLocale() or app()->getLocale() function from entire project still this happend.