bX-uf7p6c

has occurred when trying to upload a new blog template tou use as your blog's new template. Once you click confirm and save - that is when you get this bx error code message.

A solution has been mentioned:

"Somehow when trying multiple templates I ended up with two widgets
with the same name. I went in and manually deleted the duplicate widget and the problem was solved."

I hope the above solution will work for you as well.