Error on Add Listing Page - 'Category' Field Contains Invalid Value"

Hi,

Please try these three recommendations:

  1. Please disable third-party plugins and customizations (if there are any) and check if this issue persists. If you use a caching plugin, make sure that caching is disabled for logged-in users.

  2. Disable cache in a production environment

  3. Alternatively, try adding any category and then removing it.