GitHub User Search App with GitHub API, React & react-router-dom

I spend a lot of time to look into the details and make sure app works correct. I added extra features;

• loading message while fetching data
• error message when user is not found or input field is empty

I have a few questions / issues;

• I wanted to use react-router and useParams to get username from query and consume it in the result so that the url will be shown as http://domain/username, but I could not figure out how to do that on the same single page.

• I have error in my vs code terminal that Line 21:6: React Hook useEffect has a missing dependency: 'getUser'. Either include it or remove the dependency array, regarding UserResult.jsx file. I am not sure I am using useEffect correctlt with context files. I put "octocat" in getUser() function as argument to set it as default (initial value), but is it correct thing to do?

• error handling. I am not sure I am doing right for error shown when fetching data set in Github Context.jsx file.

I appreciate for any feedbacks, and help in those issues that I have.