Nginx 413 Request Entity Too Large

This error occurs when the user uploads or sends a request above client_max_body_size value on nginx configuration.

Nginx configuration

Edit nginx.conf:

sudo nano /etc/nginx/nginx.conf

Add the code below between server { }

client_max_body_size 8M;

Note: Replace 8M with the size you want.

Save by pressing the button CTRL+O, then press Enter. To exit press CTRL+X.

Then, reload nginx service.

sudo service nginx restart