Nginx 413 Request Entity Too Large Error Solution

Enter the below command to the terminal for Nginx 413 Error

sudo su
nano /etc/nginx/nginx.conf

Add under HTTP section below line

client_max_body_size 8M;

Save the file by pressing Ctrl + o then press Enter key then press Ctrl + x

After that, enter the below command

systemctl reload nginx.service

If you use PHP, then you need to edit the php.ini file like below

memory_limit = 64M
upload_max_filesize = 8M
post_max_size = 10M

If you use PHP-FPM, then you need to run the below command

systemctl restart php-fpm