Error after setting up multisite network

I setup the multisite network for my website: JNVST Prep

After setting up the multisite properly, When I am creating a new site then I am not able to open the WordPress Dashboard of that site.

https://ibb.co/Kqx68J5

This is the error image link.

And when you will open this page: https://jnvstprep.com/trial/

You will see the error on the frontend. I am pretty much sure that I have setup wp-config & .htaccess properly.

My Website is: https://jnvstprep.com/

• This topic was modified 2 years, 6 months ago by Mayank Kumar.

The page I need help with: [log in to see the link]