Comment on WordPress Widgets Tutorial by SEO Dave.
Looked through Google and WordPress forums for this problem, found nothing on the WordPress forums, but there’s a LOT of pages indexed in Google with this error message running a lot of different themes. Many of the site with this error indexed in google don’t have the error when you load the site (either temporary error or they fixed it).
Couldn’t find any page discussing this error! When I went back to your site 10 minutes later the error was no longer there.
Did you fix it or did it fix itself?
If the latter would be something at your end (server issue for example).
Have another customer with another issue and by luck noticed the domain she is testing Talian on had a sub-domain (she’s running WordPress multisite) had this error message. I think the issue with her installation is host related (not enough server resources), but could be related to your problem and if you did find a fix would appreciate a point in the right direction.
Let me know if you have any more issues.