I cannot login to my Yahoo mail?-Collection of common programming errors

I can log in to Yahoo but when I try to open my mail account I get a message saying extcontent undefined # 2146823279 log in error.
Then it goes to a white screen and just says loading…. and doesn’t go any further. This also happened to my husbands account about a month ago.

Originally posted 2013-11-09 21:23:06.