Environments gone after update

I recently updated anaconda due to an update prompt to version 2.3.1 but as soon as i did that, packages disappeared from ‘not installed’ tab in base(root) even the packages in installed don’t show the description. I wanted to install tensorflow and keras but it isn’t showing even a single package in ‘not installed’, and also those are not there in installed. Screenshots are attached for reference.
P.S: It was working fine before i uninstalled it. Since then I have tried many uninstallings and reinstallings. Didn’t kill the issue…

Another screenshot of installed tab.