I am trying to add a custom attribute to customers addresses, I can see it appearing for example when I do checkout, but when I try to save I get this exception:
main.CRITICAL: LogicException: Property "Taxcode" does not have corresponding setter in class "Magento\Quote\Api\Data\AddressExtensionInterface". in /var/www/coronelli/vendor/magento/framework/Reflection/NameFinder.php
and in fact, when they say:
Checkpoint 2: The following files are generated
It should contain getters and setters for your address attribute. In this case. setExample(), getExample()"
I have the classes inside that folder but getters and setters are not there.
Could you post your code for module, which you have tried till now?
this is quite a lot of code, so you can find it here: https://ufile.io/rwqlk