subkanthi edited a comment on issue #19903:
URL: https://github.com/apache/airflow/issues/19903#issuecomment-1002342857
Looking at this issue.
The problem is here, for some when the right shift is called for start, the
other value is None, its almost like the task group is not created properly.
```
def __rshift__(self, other: Union["DependencyMixin",
Sequence["DependencyMixin"]]):
"""Implements Task >> Task"""
self.set_downstream(other)
return other
```
```
if not isinstance(task_or_task_list, Sequence):
task_or_task_list = [task_or_task_list]
task_list: List["BaseOperator"] = []
for task_object in task_or_task_list:
```
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