Laravel 7.0 validation in Log in form

I used validation in Laravel 6.0 for login and form submission @error('email') {{ $message }} @enderror Something like this It worked well in Laravel 5.x and 6.x But I installed Laravel latest version 7.3 and it doesn't work now If I put the correct email and password, it works and redirects to the Home page But I put the wrong credentials, it shows 500 internal error (Database connection error) I have no idea about this problem. I have played with Laravel for 2 years, but this is the first time to me. Please help me, Thanks