I put a widget in the sidebar of my theme for pages. When I click one of the page from this widget I get example.com/contact-us instead of example.com/de/contact-us
I found the solution. I made comments some lines in ceceppaml.php file which clear the url and all works fine now.
I followed the instructions exactly as they have been tought me by youtube courses in greek.
The things I changed when I uploaded my site were in the folder named wp_config.php.
How can I fix this? And if I can not fix it, how can I delete it.