icecactus

@engcom-Echo, @hostep is correct, you missed the test for the private header. Anything with a private header should not be cached.

I also am getting this same error.

The above patch allowed me to save customers now and makes sense.

Update: so i can save a customer, but the TaxJar Last Sync Date, TaxJar Exemption Type, TaxJar Exempt Regions do not save. So I change them, hit save and continue...