Please try the new Release Candidate of collective.easyform on heart and kidneys (google translator ... I swear ) in your Plone 5.1/2 Python 2/3 configurations and report any issues on github ...
Awesome. Thank you for working on this Peter!
Using collective.easyform in three migrations so far, no issues so far found (Plone 5.2, Python 3).
Code of Conduct –
Hosting courtesy of Rackspace