There is a url that links to a view that is a page. When clicking the link to that view, a trailing slash gets added and the the page returns 'page not found' nothing about the site gets loaded, just this string as if it said die('page not found') first thing on load. It wouldn't matter if I would manually type the correct url, the trailing slash would be added as well and return the same page not found string.
The only module I could find was global redirect. This module has checkbox in its settings that says 'Deslash'. I tried unchecking - save and checking - save again, but no help.