Topic on Project:Support desk

Hello,

I'm upgrading wiki from 1.16 to 1.27 following Upgrade instructions.

I've done so far:

1. unpacked mediawiki-1.27.1.tar.gz to new folder
2. copied images from old wiki
3. copied LocalSetting.php
4. copied imageplus folde to extensions
5. got to maintenance and run php update.php from ssh
6. got this communicate: MediaWiki 1.27.1 Updater Your composer.lock file is up to date with current dependencies! Set $wgShowExceptionDetails = true; in LocalSettings.php to show detailed debugging information.
7. I've tried to set to true but got no any further logs.

What i'm doing wrong? Where can i find some logs what's going on?

Please Help :)