Unable to login to website after deactivating plugin

Hi,

I installed and activated a social plugin called Powr. It was working fine. Then I deactivated it and tried activating another plugin, and the site started showing an error message on top of the weblog and doesn’t allow me to log in anymore.

Here is the blog link with the error message: https://bata.in/blog/
Here is the login link with the error message: https://bata.in/blog/wp-admin/

Kindly help me out.

Thanks