NotImplementedError: method 'div' called on terminated object" about readthis

[sorentwo]

Is it possible that you have previously cached template data? It seems like Oj may be trying to parse some data that isn't actually json.

If you deployed the 1.x series over old data that didn't have any serializer flags it wouldn't properly choose the right serializer for entity loading.

[findchris]

I'm convinced this is an Oj issue, as I don't know how readthis might be generating this error beyond its usage of Oj.

To your question, this was my first deploy to production of code using readthis, so it's not a readthis versioning issue. The old cache had ActiveSupport::Cache::Entrys stored, which raised a different Oj parse error.