Well, I did everything mentioned in the "install guide", I also created and modified the config.ini. Eventually, the tables in the database were not created. Thanks to the "magical" automatical creation of the tables (mysql), I couldnt find the problem and cannot trigger it manually. Error Logs have no information.

So I have to ask you unfortunately, any idea what the issue could be ?

PHP-Version 5.4.40
MySQL-Version 5.6.23
Selfoss 2.12

Thank you in advance