Anyone seen this error occuring out of the sudden on Plone 5.2/Python 3 site?
Module chameleon.template, line 209, in render
Module chameleon.utils, line 75, in raise_with_traceback
Module chameleon.template, line 187, in render
Module 4ca387f63775c64ebcc5b27106afa95e.py, line 1750, in render
Module fac76ee8da75cb24ddd905995267f23c.py, line 444, in render_master
Module plone.app.layout.globals.layout, line 97, in have_portlets
Module plone.portlets.manager, line 49, in visible
Module plone.portlets.manager, line 69, in portletsToShow
Module plone.portlets.manager, line 72, in allPortlets
Module plone.memoize.view, line 48, in memogetter
Module plone.portlets.manager, line 109, in _lazyLoadPortlets
Module plone.portlets.retriever, line 108, in getPortlets
Module plone.portlets.assignable, line 58, in getBlacklistStatus
Module plone.portlets.assignable, line 68, in _getBlacklist
Module zope.annotation.attribute, line 68, in get
Module ZODB.Connection, line 795, in setstate
Module ZODB.serialize, line 633, in setGhostState
Module ZODB.serialize, line 626, in getState
ValueError: insecure string pickle