Spring Failed to evaluate Jackson deserialization for type [[simple type, class void]]

Warning log is as follows: WARN o.s.h.c.json.MappingJackson2HttpMessageConverter - Failed to evaluate Jackson deserialization for type [[simple type, class void]] com.fasterxml.jackson.databind.JsonMappingException: Internal error: can't find deserializer for void

Comment From: bclozel

This is likely to be a Jackson usage problem rather than a bug in Spring Framework. Please reopen this issue if you believe that it's a bug in Spring Framework - you'll need a small project (a zip, a project that we can clone) that shows the problem.

Thanks!