Error on upgrade

We are getting
“dropbox_access_key”: doc.dropbox_access_key,
AttributeError: ‘list’ object has no attribute ‘dropbox_access_key’ after latest upgrade. What we need to do to correct the issue?

-Amit

@Amit_Saxena Thanks for reporting the issue. Fixing via https://github.com/frappe/frappe/pull/2064

Merged the fix, please update again.