fix: socket receive null message happend error

@@ -77,6 +77,7 @@ export function useSocketConnect(dataSourceRef: Ref<DataBoardLayoutInfo[]>) {
         // console.log({ dataSource: unref(dataSourceRef), cmdIdMapping });
         const res: ResponseMessage = JSON.parse(message.data);
         const { subscriptionId, data = {} } = res;
+        if (!subscriptionId) return;
         const mappingRecord = cmdIdMapping.get(subscriptionId);
         if (!mappingRecord) return;
         const { attribute, recordIndex, dataSourceIndex } = mappingRecord;
@@ -102,8 +103,14 @@ export function useSocketConnect(dataSourceRef: Ref<DataBoardLayoutInfo[]>) {
     let index = 0;
     unref(dataSourceRef).forEach((record, recordIndex) => {
       const componentId = record.record.id;
-      record.record.dataSource.forEach((dataSource, dataSourceIndex) => {
+      for (
+        let dataSourceIndex = 0;
+        dataSourceIndex < record.record.dataSource.length;
+        dataSourceIndex++
+      ) {
+        const dataSource = record.record.dataSource[dataSourceIndex];
         const { deviceId, attribute, slaveDeviceId, gatewayDevice } = dataSource;
+        if (!attribute) continue;
         const cmdId = index;
         index++;
         setCmdId(cmdId, {
@@ -117,7 +124,7 @@ export function useSocketConnect(dataSourceRef: Ref<DataBoardLayoutInfo[]>) {
         messageList.push(
           generateMessage(gatewayDevice ? slaveDeviceId : deviceId, cmdId, attribute)
         );
-      });
+      }
     });
     return {
       tsSubCmds: messageList,