计量台账，变更令，重新获取后，加载变更清单问题

app/public/js/stage.js

@@ -3091,7 +3091,7 @@ $(document).ready(() => {
                 SpreadJsObj.loadSheetData(self.changeSheet, SpreadJsObj.DataType.Data, self.changes);
                 self.changeSheet.setSelection(0, 0, 1, 1);
                 if (self.changes.length > 0) self.analyzeChange(result.changes[0]);
-                self.curChangeId = result.changes[0].id;
+                self.curChangeId = self.changes.length > 0 ? self.changes[0].id : null;
                 self.loadChangeDetailData();
             });
         }