I cannot add new or edit existing content types. This is a drupal 7 site. I keep getting the error:
The website encountered an unexpected error. Please try again later.
The log returns:
REFERRER http://www.example.com/admin/structure/types MESSAGE
EntityMetadataWrapperException: Invalid data value given. Be sure it matches the required data type and format. in EntityDrupalWrapper->set() (line 737 of /home/example/public_html/sites/all/modules/entity/includes/entity.wrapper.inc). SEVERITY error
Can someone please help? I'm kinda stuck!
The site has been live over a year. All the modules are up to date.