Permission denied for schema public

[nevillerokad]

I am learjning to use SQL and have installed popsql.

PopSQL - permission denied for schema public

Today I started learning SQL for the first time and I found this error saying permission denied for schema public which I cannot run the data. How can I fix it? [Screen Shot 2563-07-05 at 16.28.57]

This is the issue. Please help to resolve it.