Fehler beim Update von 5.6.9 auf 5.7.6

Hallo zusammen,

ich versuche meinen Shop von 5.6.9 auf 5.7.6 upzudaten.
Leider erhalte ich nach dem Update bzw. während dem Aufräumen folgenden Fehler:

Slim Application Error

The application could not run because of the following error:
Details
Type: ErrorException
Code: 256
Message: Listener "registerOmecoExternalSubscribers" in "OmecoPaymentShippingIcons" is not callable.
File: /var/www/.../web/engine/Library/Enlight/Event/Handler/Plugin.php
Line: 150
Trace

#0 [internal function]: Slim\Slim::handleErrors()
#1 /var/www/.../web/engine/Library/Enlight/Event/Handler/Plugin.php(150): trigger_error()
#2 /var/www/.../web/engine/Library/Enlight/Event/EventManager.php(208): Enlight_Event_Handler_Plugin->execute()
#3 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(221): Enlight_Event_EventManager->notify()
#4 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(136): Shopware\Components\DependencyInjection\Container->doLoad()
#5 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Bridge/Front.php(65): Shopware\Components\DependencyInjection\Container->get()
#6 /var/www/.../web/var/cache/production_202110251506/proxies/ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer.php(5443): Shopware\Components\DependencyInjection\Bridge\Front->factory()
#7 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(257): ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer->getFrontService()
#8 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(231): Symfony\Component\DependencyInjection\Container->make()
#9 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(212): Symfony\Component\DependencyInjection\Container->get()
#10 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(136): Shopware\Components\DependencyInjection\Container->doLoad()
#11 /var/www/.../web/engine/Shopware/Bundle/MediaBundle/MediaService.php(296): Shopware\Components\DependencyInjection\Container->get()
#12 /var/www/.../web/engine/Shopware/Bundle/MediaBundle/MediaService.php(75): Shopware\Bundle\MediaBundle\MediaService->createFallbackMediaUrl()
#13 /var/www/.../web/engine/Shopware/Bundle/MediaBundle/MediaServiceFactory.php(85): Shopware\Bundle\MediaBundle\MediaService->__construct()
#14 /var/www/.../web/var/cache/production_202110251506/proxies/ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer.php(8052): Shopware\Bundle\MediaBundle\MediaServiceFactory->factory()
#15 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(257): ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer->getShopwareMedia_MediaServiceService()
#16 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(231): Symfony\Component\DependencyInjection\Container->make()
#17 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(212): Symfony\Component\DependencyInjection\Container->get()
#18 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(136): Shopware\Components\DependencyInjection\Container->doLoad()
#19 /var/www/.../web/var/cache/production_202110251506/proxies/ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer.php(9293): Shopware\Components\DependencyInjection\Container->get()
#20 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(257): ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer->getThemeServiceService()
#21 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(231): Symfony\Component\DependencyInjection\Container->make()
#22 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(212): Symfony\Component\DependencyInjection\Container->get()
#23 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(136): Shopware\Components\DependencyInjection\Container->doLoad()
#24 /var/www/.../web/var/cache/production_202110251506/proxies/ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer.php(9285): Shopware\Components\DependencyInjection\Container->get()
#25 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(257): ShopwareProduction61cff9cb7b7b6b2f139adb3dcfc66665d81164ebProjectContainer->getThemeInstallerService()
#26 /var/www/.../web/vendor/symfony/dependency-injection/Container.php(231): Symfony\Component\DependencyInjection\Container->make()
#27 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(212): Symfony\Component\DependencyInjection\Container->get()
#28 /var/www/.../web/engine/Shopware/Components/DependencyInjection/Container.php(136): Shopware\Components\DependencyInjection\Container->doLoad()
#29 /var/www/.../web/recovery/update/src/DependencyInjection/Container.php(189): Shopware\Components\DependencyInjection\Container->get()
#30 /var/www/.../web/recovery/common/vendor/pimple/pimple/src/Pimple/Container.php(118): Shopware\Recovery\Update\DependencyInjection\Container->Shopware\Recovery\Update\DependencyInjection\{closure}()
#31 /var/www/.../web/recovery/common/src/DependencyInjection/Container.php(73): Pimple\Container->offsetGet()
#32 /var/www/.../web/recovery/update/src/app.php(169): Shopware\Recovery\Common\DependencyInjection\Container->get()
#33 [internal function]: {closure}()
#34 /var/www/.../web/recovery/common/vendor/slim/slim/Slim/Route.php(468): call_user_func_array()
#35 /var/www/.../web/recovery/common/vendor/slim/slim/Slim/Slim.php(1355): Slim\Route->dispatch()
#36 /var/www/.../web/recovery/common/vendor/slim/slim/Slim/Middleware/Flash.php(85): Slim\Slim->call()
#37 /var/www/.../web/recovery/common/vendor/slim/slim/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()
#38 /var/www/.../web/recovery/common/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()
#39 /var/www/.../web/recovery/common/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()
#40 /var/www/.../web/recovery/update/index.php(57): Slim\Slim->run()
#41 {main}

Kann mir jemand einen Tipp geben?
Ich habe auch schon versucht Plugins, welcjhe kein Update mehr erhalten bzw. outdated sind zu deaktivieren vor dem Update aber auch das bringt keinen Erfolg.

Danke!

Weiß nicht um welches Plugin es sich genau handelt, aber von Shopware kommt das nicht. Muss ein Plugin sein. Irgendetwas mit „Omeco“ … mir sagt das aber nichts.