I have a strange error.
I created a new CMS page with url
mtclp/20 and got an error page 404.
If I change url on just lps, it works. If I try with, for example, test/30, It also works. Other pages also works.
Magento does not like only the combination mtclp/20.
We do not have this url anywhere. I cleaned cash and tried to search by global search this combination in project.