I have problem upgrading Dta.fs for new install of the Plone site.
I installed Plone 5.1.6 on Windows server 2016 and have Plone template up. I copied Data.fs from my site 5.0.8 from another server and try to upgrade data with "Upgrade" button since I get warning that this site configuration is outdated and needs to be upgraded. This is log I get and upgrade is not successfull. Any ideas? I'm not so good in administering plone
An error was encountered while publishing this resource. Sorry, a site error occurred. Traceback (innermost last): * Module ZPublisher.Publish, line 249, in publish_module_standard * Module ZPublisher.Publish, line 197, in publish * Module zope.event, line 31, in notify * Module zope.component.event, line 27, in dispatch * Module zope.component._api, line 139, in subscribers * Module zope.interface.registry, line 442, in subscribers * Module ZODB.Connection, line 800, in setstate * Module ZODB.serialize, line 623, in setGhostState * Module zope.component.persistentregistry, line 39, in __setstate__ * Module zope.interface.adapter, line 97, in _createLookup * Module zope.interface.adapter, line 458, in __init__ * Module zope.interface.adapter, line 495, in init_extendors * Module zope.interface.adapter, line 499, in add_extendor AttributeError: type object 'IFieldValueSetter' has no attribute '__iro__'