1. SSH to your machine using terminal, putty, etc.
2. Open your nginx.conf file with your favorite editor
# sudo nano /etc/nginx/nginx.conf
3. Add client_max_body_size 100m; to the http { } section of your site.
http {
#Basic Settings
client_max_body_size 100m;
}
4. Restart Nginx service sudo service nginx restart
Test the upload again and see if this has resolved your issues.
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