I've seen some issues before when deployed Wordpress to Digitalocean droplet on the LEMP stack and sorted out by simply changing Nginx, PHP settings. However, when I try to upload a 17Mb theme it pops up this notification "The link you followed has expired. Please try again." 8Mb theme uploaded pretty well tho.

• /etc/php/7.3/cli/php.ini:
• /etc/php/7.3/fpm/php.ini:
• /var/www/my_website/wp-config.php: