Hello @jstneti ,
Our process received this particular error:
504 Gateway Time-out 504 Gateway Time-out nginx/1.24.0
It means that backup process encountered timeout limit within your nginx configuration and was cancelled by the web server.
Timeout in nginx is not the same as max_execution_time and it seem to be set around 60 seconds on your server.
You need to adjust its value in your virtual host or global configuration and restart nginx, once you do that our backup plugin will be working properly.
Let me know if that resolves your issue ??
Thank you!