Solved Kunena 6.2.0-BETA2 Undefined constant "KPATH_ADMIN" activating Plugin uddeim

When I activate the plugin uddeim in Kunena 6.2.0-BETA2, I get the message
Error 0 Undefined constant "KPATH_ADMIN"

Es ist ein Fehler aufgetreten.

0 Undefined constant "KPATH_ADMIN"

Call stack#FunctionLocation1()JROOT/plugins/kunena/uddeim/uddeim.php:552PlgKunenaUddeIM->__construct()JROOT/libraries/src/Extension/ExtensionManagerTrait.php:2423Joomla\CMS\Application\CMSApplication->loadPluginFromFilesystem()JROOT/libraries/src/Extension/ExtensionManagerTrait.php:1604Joomla\CMS\Application\CMSApplication->loadExtension()JROOT/libraries/src/Extension/ExtensionManagerTrait.php:995Joomla\CMS\Application\CMSApplication->bootPlugin()JROOT/libraries/src/Plugin/PluginHelper.php:2326Joomla\CMS\Plugin\PluginHelper::import()JROOT/libraries/src/Plugin/PluginHelper.php:1927Joomla\CMS\Plugin\PluginHelper::importPlugin()JROOT/libraries/kunena/src/Config/KunenaConfig.php:17228Kunena\Forum\Libraries\Config\KunenaConfig->load()JROOT/libraries/kunena/src/Config/KunenaConfig.php:16829Kunena\Forum\Libraries\Config\KunenaConfig::getInstance()JROOT/administrator/components/com_kunena/api/api.php:2510require_once()JROOT/plugins/system/kunena/kunena.php:6111PlgSystemKunena->__construct()JROOT/libraries/src/Extension/ExtensionManagerTrait.php:24212Joomla\CMS\Application\CMSApplication->loadPluginFromFilesystem()JROOT/libraries/src/Extension/ExtensionManagerTrait.php:16013Joomla\CMS\Application\CMSApplication->loadExtension()JROOT/libraries/src/Extension/ExtensionManagerTrait.php:9914Joomla\CMS\Application\CMSApplication->bootPlugin()JROOT/libraries/src/Plugin/PluginHelper.php:23215Joomla\CMS\Plugin\PluginHelper::import()JROOT/libraries/src/Plugin/PluginHelper.php:19216Joomla\CMS\Plugin\PluginHelper::importPlugin()JROOT/libraries/src/Application/CMSApplication.php:74417Joomla\CMS\Application\CMSApplication->initialiseApp()JROOT/libraries/src/Application/AdministratorApplication.php:31218Joomla\CMS\Application\AdministratorApplication->initialiseApp()JROOT/libraries/src/Application/AdministratorApplication.php:16519Joomla\CMS\Application\AdministratorApplication->doExecute()JROOT/libraries/src/Application/CMSApplication.php:29320Joomla\CMS\Application\CMSApplication->execute()JROOT/administrator/includes/app.php:6121require_once()JROOT/administrator/index.php:32

The error is displayed permanently in the frontend and backend, even if the pages are reloaded or the test page is terminated and restarted.
The website is only redisplayed to me if I deactivate the "KPATH_ADMIN" in plugins/kunena/uddeim/uddeim.php:55 at the end of line 55 by a hash # in front of it
Then I can deactivate the plugin again in the backend and remove the hash # in plugins/kunena/uddeim/uddeim.php:55 again afterwards....

Gindi

So here is this error again
if I remove line 55 "KPATH_ADMIN" in \plugins\kunena\uddeim\uddeim.php it works

that of kpath_admin now only seems to occur on older upgraded websites

it's only on this older website so far I have attached an anonymous report from Kunena


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You should have the same issue with others integration plugins like CB, Joomsocial because this line of code is the same in others plugins

Yes, I don't fully understand the difference yet, I'll look into it further.
I do notice on one site I have installed admin tool
and on another Community Builder where it occurs