I have two sites
Plone 5.2.1 using Python 3.6
standalone - based on unified installer
Plone 5.2.1 using Python 3.7
zeo - based on unified installer and uses plone_buildout user
On both of them I've added a product that relies on jbot to do overrides in a browser/overrides.
The overrides work on Site A but not on Site B.
Any clues why jbot would work in one context and then fail in another?