Thread:Project:Support desk/How to make a button: create a pdf?/reply (2)

Hello!

Thanks for the reply!

Tell me, please, is there an extension for mediawiki 19?

I installed this extension to the wiki 1.19.0, it shows an error:

Fatal error: Cannot access protected property Revision::$mTimestamp in /home/p66320/www/wikicoder.org/extensions/Collection/Collection.body.php on line 1138

What to do?

Thank you!