Máte chybu v syntaxi SQL

When updating the application, an error message containing "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ..." is displayed in the protocol.

Cause
This means that your database is outdated and cannot work with the request that our application sends to it. It simply does not understand it.

Solution
You need to update your database.

How to update the database?
Detailed description in the Knowledge Base.