That's Japanese, reporting (according to the title!) a domain error. owaunz, if you own the site, you want the www.p5info.com URL to work like the p5info.com one. The latter do work and lead to a Japanese language only Web site on Processing.
If you don't own the site, perhaps you should notify the maintainer to try and fix the www issue.
Meanwhile, perhaps you should spread the working URL instead...
