问题 When i updated my Spring Boot 2.3.0.RELEASE Application from Hoxton.SR4 to Hoxton.SR6 (the only change), i started facing weird issues with Content Type from various endpoints. For example, with Hoxton.SR4, any unauthorized endpoint was returning this error: { "error": "unauthorized", "error_description": "Full authentication is required to access this resource" } Same authorization server error in Hoxton.SR6 comes in XML <UnauthorizedException> <error>unauthorized</error> <error_description