This snippet works as expected in terms of computing the results and using caching where specified but the pipeline page doesn't show anything at all.

Moving append_string anywhere else in the script results in the following error:

  File "/home/user/miniconda3/envs/clearml/lib/python3.10/site-packages/clearml/automation/controller.py", line 3544, in wrapper
    _node = cls._singleton._nodes[_node_name].copy()
KeyError: 'append_string'

Using None & clearml==1.9.1