place:
/opt/lampp/logs/php_error_log

php.ini:
/opt/lampp/etc

################

could not find driver :

You might need to uncomment the following in your php.ini file.

;extension=pdo_mysql.so

BUT, on UBUNTU:

sudo apt install php-mysql

php artisan cache:clear

How to fix the “Could Not Find Driver” error in Laravel
https://laraveltips.io/how-to-fix-the-could-not-find-driver-error-in-laravel/