On desktop/laptop version, when I do a search and then click on a category I get an error page

[charlesscottgallery]

I do a general search for "spongebob," for example. Then I click on any category (seemingly) in the lefthand column of categories, I get an error page.

[eburtonlab]

Do you get the same error if you use a different browser?

If not, try clearing your cache and manually erasing just your eBay cookies in the original browser.