Change php.ini

From Terminal

• $ nano /etc/php/7.4/fpm/php.ini
• Set…

upload_max_filesize = 120M
post_max_size = 120M

Change Nginx config

From Terminal

• $ nano /etc/nginx/nginx.conf 
• Set..

http {
	#...
        client_max_body_size 100m;
	#...
}

Restart NGINX

# systemctl restart nginx.service

# systemctl start php7.4-fpm.service

Changes in WordPress-Multisite

Network Admin >> Dashboard >> Settings >> Network Settings. Look for Upload Settings

Also change value for Max upload file size

Resources

• https://easyengine.io/tutorials/php/increase-file-upload-size-limit/