Error: Hydration failed because the initial UI does not match what was rendered on the server.

Or any DB issue related to connection. Above one is main.
I came across this issue. I had creted DB at superbase in postgresql, it will come with any DB.
This is superbase issue. If you have your DB there. You will get this issue.
Solution:
1. go to your project.
2. Go to settings and restart the project and issue will be fixed.
Happy coding.

Restart will take some time.

So the DB issue is solved. Thanks.
I am recording a course on nextjs bootcamp. Soon it will be available with voice :)