Topic on Project:Support desk

Hello! I have troubles with Mediawiki 1.28.0. I am trying to load the main page but getting an error message. It says that the name of this page is invalid because it contains invalid characters: "%D0". But I can't see any invalid characters! After this text, there is a link to the main page. I click on it and everything is OK - it takes me to the real main page. What am I doing wrong?

Is your wiki public? Could you link to it so we can see the problem?

Otherwise, a screenshot would help.

There is a link: https://evs.falanster.info It's Belorussian localisation.

Ah, I have already fixed problem! Thanks.

Could you post how you fixed the problem?