Thread:Extension talk:PageAttachment/Browse/search for existing (uploaded) files and attach - FATAL ERROR/reply (6)

I'm having a similar problem in 1.92 using the latest edition (3.00 alpha) of this extension. I get a HTTP Error 500 server error in my browser - /mediawiki/index.php?title=Special:PageAttachmentListFiles&rvt=9b2684fb9d2c2f210908ab71a261a1a1e6bd96484ee0c1e81bf72e5b6cb46abe&rnd=V96XTB8JH1HPRPI7JNTZHEQ. Is there a fix for this? Thanks, Jordan.