I am not sure what you refer to using a “built in filter”, I just assumed it was controlled via CSS but I cannot located the code where to adjust this. So yes, if you can point me in the right direction, I’d appreciate it.
SO I enabled the DEBUG mode and there is no mention of the error you spoke of. I left the DEBUG mode on in case you want to look at it. There was some mention of a strict script for the lightbox plugin I was using, but I disabled all other plugins and left only the simple yearly archive active.