Running phpBB 3.2.5 with Enabled Extensions: Auto Groups, Board Announcements, Board Rules, External link in new window, Header banner, Quick Reply on last page only, Quick Reply reloaded, Topic age warning & VigLink.
PHP 7.1.14, MySQL 5.1.3, Apache 2.2.24, local : Firefox 65.0.2, Windows 10
I have been testing out Topic age warning. It seemed to be working well, I unlocked several topics to see the interaction and I received a warning message at the top of the window. See image below.
I disabled the extension and the message want away. I deleted the data and uninstalled the extension. Still no error message. I reinstalled from new and enabled the extension. Same error message displays. I did disable extension Quick Reply on last page as well because it was the last extension installed and right after Topic age warning.
David, you out there?