WARN  o.s.w.s.m.s.DefaultHandlerExceptionResolver - Failed to bind request element: org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'java.time.Instant'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam @org.springframework.format.annotation.DateTimeFormat java.time.Instant] for value '2019-08-12,10:00:12'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [2019-08-12,10:00:12]