gnailJC commented on issue #12966:
URL:
https://github.com/apache/dolphinscheduler/issues/12966#issuecomment-1430894286
```
public void setNextNode(Object nextNode) {
if (nextNode instanceof Long) {
this.nextNode = (Long) nextNode;
} else {
List<String> nextNodes = (ArrayList) nextNode; // CaseError
if (CollectionUtils.isNotEmpty(nextNodes)) {
this.nextNode = Long.parseLong(nextNodes.get(0));
}
}
}
````
<img width="749" alt="image"
src="https://user-images.githubusercontent.com/31072303/218965398-a007d573-3e62-4d1d-99f6-5c251d60fea0.png";>
An CaseError will occur if the nextNode is empty when `branch flow` is not
set.
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