Good morning.
I have problem with the web, in the section "blog" shows this error: Fatal error: Call to a member function userProfileUrl() on a non-object in /home/acequil/public_html/joomla3/components/com_k2/helpers/route.php on line 72

If anyone knows the solution to this problem, please help me.

Hello,

Which version of K2 are you using?
Also have you disabled the user profile or using any 3rd party K2 extensions?