I have a clean install of J4.0.2 (haven't migrated from J3.10), installed the Jevent 3.6.15 package and Custom Fields 3.7.0. (No errors)
The Jev Custom Fields plugin is enabled.
Issue
I am unable to create a new Custom Field Template or even open and save an existing example template.
On saving I get the following error (detail in in the attachment)
An error has occurred.
0 Illegal offset type in isset or empty.
Additional configuration required or is this bug?
Cheers Peter