Empty declension tables

I have no idea why sv-noun-reg-ar has stopped working. It used to work not so long ago. It must be some low-level template that has changed. I hope someone fixes this.

Biltvätt (a carwash) is an institution or machine that certainly can exist in plural. Tvätt (in the sense laundry) does not exist in plural, and thus is uncountable. The fact that tvätt can also be a shorthand for carwash is not mentioned in the article tvätt, but perhaps it should be. In that sense it can of course exist in plural, e.g. Bilen var smutsig, men det var så lång kö vid biltvätten, att jag körde till andra änden av staden, där det ligger två tvättar som sällan är upptagna. (The car was dirty, but the waiting line at the carwash was so long, that I drove to the other end of town, where there are two washes that seldom are busy.) Note, however, that this sentense was made up for this need, and not an authentic language sample. Authentic samples should always be preferred.

I took the question to Wiktionary:Grease_pit/2014/April#Broken Swedish declension template.