fix 媒体设备集群下线监听

jetlinks-manager/device-manager/src/main/java/org/jetlinks/community/device/message/DeviceMessageSendLogInterceptor.java

@@ -23,6 +23,7 @@ import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
 import java.util.Map;
+import java.util.Optional;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 

jetlinks-standalone/src/main/java/org/jetlinks/community/standalone/configuration/ErrorControllerAdvice.java

@@ -33,7 +33,7 @@ public class ErrorControllerAdvice {
             || e.getCode() == ErrorCode.PARAMETER_UNDEFINED) {
             //404
             return Mono.just(ResponseEntity
-                .status(HttpStatus.NOT_FOUND)
+                .status(HttpStatus.INTERNAL_SERVER_ERROR)
                 .body(ResponseMessage.error(e.getCode().name().toLowerCase(), e.getMessage())));
         }