```
step-send-slack-notification
Traceback (most recent call last):
  File "/tekton/scripts/script-0-ds4hk", line 49, in <module>
    namespace: str | None, pipelinerun: str
TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'
```

Signed-off-by: Chmouel Boudjnah <chmouel@chmouel.com>