I upgrade my version of magento 2.1.6 to 2.3.2.
Now I have kind of problem with php bin/magento system:upgrade.
In file system cleanup the last line is :
The directory '/var/www/MyWebSite/magento/generated/metadata/' doesn't exist - skipping cleanup
In Updating modules / schema post-updates :
Notice: Undefined index: getUpdateOnlineCart in /var/www/MyWebSite/magento/vendor/magento/framework/Reflection/MethodsMap.php on line 81
I don't fully understand what is the problem; someone have an idea ?
PS: if you need more info or in case of minus please let me know like that I can update my post
EDIT Actually I am using this extension https://www.magestore.com/catalog/product/view/_ignore_category/1/id/208/s/magento-pos-integration-extension#overview-box, it is not compatible with magento 2.3 ? because the problem look to come from here