missing “/” most peculiar – can anyone advise please??

Hi Folks

This is very odd, can anyone help.

I have upgraded to v2.3 and been busy adding posts and categories.

However when I click on a category link the url cannot resolve to that category as it is malformed:
http://blog.mychoicevillas.comcategory/a-letter-from-france/

There is a “/” missing from between .com and category. Can anyone tell me why and how to fix it???

Many thanks

Deryn