[SOLVED] Dio Link ( direct request )

How can I use post method with dio directly in flutter ? I use direct link but that give me 501 code 😦 and How can I set project id to my request ? you can see from Picture

TL;DR

The user was having an issue with making a POST request using Dio directly in Flutter. They were getting a 501 error code and wanted to know how to set the project ID for their request. The issue has been solved. The solution was to refer to the REST API docs and examples for making API calls and to use the provided links for more information.