Sourcerer is not working with Joomla 4.1.3

Hi,
I updated joomla from 3 to 4 and installed the latest Sourcerer plugin. When the plugin is active I get this error:
0
Class 'JDispatcher' not found

Call stack
# Function Location
1 () JROOT/tmp/regularlabs/27808_0d1708bed7ce61b0eb5149170da4a130:14
2 regularlabs_php_24c581caa2c46b91d1af5b341e1fceb9() JROOT/libraries/regularlabs/src/Php.php:48
3 RegularLabs\Library\Php::execute() JROOT/plugins/system/sourcerer/src/Replace.php:587
4 RegularLabs\Plugin\System\Sourcerer\Replace::replaceTagsPHP() JROOT/plugins/system/sourcerer/src/Replace.php:360
5 RegularLabs\Plugin\System\Sourcerer\Replace::replaceTagsByType() JROOT/plugins/system/sourcerer/src/Replace.php:245

I have already done that:
Removing Plugin and this folders:
/libraries/regularlabs
/plugins/system/regularlabs
/plugins/system/articlesanywhere
/plugins/system/sourcerer

Clear every cache.
Reinstall plugin - same error.
I use Yootheme Pro as template.

Any idea?
Thanks Robin

Hi Peter,
your right 🙂
Thanks for your help.

regards Robin