Warning - Trying to access array offset on value of type null in Events/VisitorDetails.php

[tsteur]

plugins/Events/VisitorDetails.php(63): Warning - Trying to access array offset on value of type null - Matomo 4.14.3-b1 - Please report this message in the Matomo forums: https://forum.matomo.org (please do a search first as it might have been reported already) #0/plugins/Events/VisitorDetails.php(63),#1/plugins/Live/Live.php(192),[internal function]: Piwik\Plugins\Live\Live->renderAction(),#3/core/EventDispatcher.php(147),#4/core/Piwik.php(871),#5/core/Twig.php(273),#6/tmp/templates_c/d4/d4ee03450ac17399246928fc7714bf9323df3833980575227b5b5ffd47e06387.php(82),#7/vendor/twig/twig/src/Template.php(394),#8/vendor/twig/twig/src/Template.php(367),#9/tmp/templates_c/eb/eb8697eb8db515a31b043d09e060d390bc128bc6262e5836e8a728f026df8b04.php(180)

Happened 3 times in the last 3 hours. This is all the information I have.

[michalkleiner]

Hi @tsteur,
thanks for logging the issue. I can see how/why the warning can be raised, I was not able to replicate it locally yet, but looking into it.

[michalkleiner]

After a chat with the core team we think we should add safeguards to all the places where $action['type'] is expected to be set since it's possible for plugins to add custom actions without the type key set, and possibly also filter out any blank actions before trying to render them.