I installed mediawiki 1.28.2 on a server Ubuntu 16.04 / Apache 2.4.18 / PHP 7.0 / MariaDB 10.0.29.
Everything work fine until I got an error message when trying delete page from my wiki.
Database error
A database query error has occurred. This may indicate a bug in the software.
[23f939656076e62453b3960b] 2017-06-23 04:49:43: Fatal exception of type "DBQueryError"
Picture : https://s29.postimg.org/58g05xytz/Screenshot_from_2017-06-23_13-02-29.png
How to fix this issue ?