As an experienced Linux Engineer and Full Stack Dev, I have extensive knowledge in handling various Linux distributions including Ubuntu, Centos, Kali Linux, Debian and Rocky Linux; which makes me perfectly suited to handle the issue you're facing in loading a backup onto your Odoo18 CE Server. My PostgreSQL expertise is directly relevant to your needs and gives me an edge when it comes to troubleshooting such errors.
Understanding the intricacies of web development, NodeJS, and ReactJS alongside my strong System Admin experience allows me to connect the dots efficiently for you. The error you're facing - "413 Request Entity Too Large" on your Nginx server - indicates there is a limit set on client request sizes that might be exceeding the size of backup you are trying to load.
I am confident I can diagnose the root cause of this issue and help you overcome it effectively with step-by-step guidance. My commitment to providing timely and reliable solutions has earned me positive feedback from previous clients. Choose me for a service that combines technical prowess with a client-centric approach!