Bug error after update to 4.15.1

WARNING: /core/Plugin/Controller.php(808): Deprecated - Creation of dynamic property Piwik\View\OneClickDone::$customFavicon is deprecated - Matomo 4.15.0 - Please report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already) (Module: CoreUpdater, Action: oneClickUpdate, In CLI mode: false)

Hi @Joppla
Very strange, you mentioned: after update to 4.15.1, but error says you are in version 4.15…

I haven’t any idea. First, it is 4 month ago. Second I have done what was requested: “Please report this message in the Matomo forums”

Hi @Joppla
Did you finally solve the issue? Do you still have errors?
I think the update did not run fully (then generated an unexpected error)

4.15.1 is installed and it works. I cannot remember what actions I did 4 months ago.