....

src/main/java/cn/com/qmth/examcloud/web/cloud/CloudClientSupport.java

@@ -140,7 +140,8 @@ public abstract class CloudClientSupport {
 			StatusResponse sr = JsonUtil.fromJson(body, StatusResponse.class);
 			throw new ApiFlowLimitedException(sr.getCode(), sr.getDesc());
 		} else {
-			throw new ExamCloudRuntimeException("unexpected http status code");
+			throw new ExamCloudRuntimeException(
+					"unexpected http status code [" + respEntity.getStatusCode() + "]");
 		}
 	}