Error on Joomla 5.4.2 site with CB 2.11.0+build.2026.01.12.21.55.56.a25ef0f6c

Deprecated: Creation of dynamic property Joomla\Registry\Registry::$default is deprecated in/home/ua887228/public_html/fairfaxprism/libraries/vendor/joomla/registry/src/Registry.phpon line937

All that output appeared in the upper left corner of the backend with the Community Builder Control Panel open.

Joomla 5.4.2
CB 2.11.0+build.2026.01.12.21.55.56.a25ef0f6c
PHP 8.3

I'm not seeing such an error in my tests. Please enable debug mode and maximum error reporting in Joomla global configuration then retry and provide the full callstack for the error so we can see where it's coming from.

Oh, hi Kyle,

That's exactly how I got this message. It's only a deprecation warning, and it's backend, so it's not my template. Just thought you'd want to know.

I can send a screenshot, but you won't see anything new.

Cheers!
Bruce

You might be able to see the full callstack in the debug bar at the bottom of the page. Without it we've no clue where that could be coming from so there's nothing we can do here as your issue isn't reproducible in any of our clean environments. My guess is it's from a 3rd party extension or CB plugin as we're not setting ->default anywhere that I can find in core CB and we don't use Joomla's Registry object throughout CB we use our own.

There's no traceback since there was no exception. I have the data captured in an .xlsx file, but isn't it a bit unsecure to upload it here? (maybe not?) Otherwise, how can I send it to you?

I would only need the callstack trace of that error. Anything else is of no consequence. You can remove your server path from the callstack with a find + replace. It shouldn't contain anything by file paths and line numbers.