Slim Application Error

The application could not run because of the following error:

Details

Type: Error
Message: Class "Ionexus\Mydata\Helper\SearchHelper" not found
File: /var/www/vhosts/koehlerchemie.de/httpdocs/module/ionexus-site/src/Controller/IndexController.php
Line: 60

Trace

#0 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/ionexus-framework/ionexus-core/src/Controller/AbstractActionController.php(61): Ionexus\Site\Controller\IndexController->searchAction()
#1 [internal function]: Ionexus\Core\Controller\AbstractActionController->__invoke()
#2 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(41): call_user_func()
#3 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/Route.php(335): Slim\Handlers\Strategies\RequestResponse->__invoke()
#4 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\Route->__invoke()
#5 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/Route.php(313): Slim\Route->callMiddlewareStack()
#6 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/App.php(513): Slim\Route->run()
#7 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\App->__invoke()
#8 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/App.php(406): Slim\App->callMiddlewareStack()
#9 /var/www/vhosts/koehlerchemie.de/httpdocs/vendor/slim/slim/Slim/App.php(314): Slim\App->process()
#10 /var/www/vhosts/koehlerchemie.de/httpdocs/www/index.php(82): Slim\App->run()
#11 /var/www/vhosts/koehlerchemie.de/httpdocs/www/index.php(83): {closure}()
#12 {main}