Update...

Update dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/controller/BaseController.java
Co-authored-by: NWenjun Ruan <wenjun@apache.org>

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/controller/BaseController.java

@@ -100,7 +100,7 @@ public class BaseController {
             return success(msg, datalist);
         } else {
             Integer code = status.getCode();
-            String msg = (String)result.get("msg");
+            String msg = (String) result.get(Constants.MSG);
             return error(code, msg);
         }
     }