I purchased the Level+ theme and installed & set as default it but now my website is broken
"The website encountered an unexpected error. Please try again later."
How can i switch back to the previous bartik theme as i cannot login to admin. This https://www.drupal.org/node/200774 says the value of 'system.theme' is in the table 'config' but which is the correct record to update as the 'data' column is also in a "blob".
Thanks for any help.