@danyelguero I’m stuggeling with the same issue. Please try to restart your your webserver service and after that access your Pico website.
If the problem is solved, have fun. If not remove the “Pico” folder in /var/www/ then clone Pico github repository and run “/var/www/Pico && composer.phar install”, set propper permissions “chown -R www-data:www-data /var/www/Pico” and finaly restart your webserver service.
I’m encountering this problem each time my router get’s a new IP address from my ISP.
I know this isn’t the finest solution but while I’m searching for the final solution it’s a workarround I can/must life with.