HuggingFace evaluate-cli create command results Error: "datasets[0]" must be a string

Question

I follow the official documentation of evaluate 0.4.0 to freshly create a custom metric in an empty folder with the following command:

evaluate-cli create "My Metric" --module_type "metric"

The command returns the following error:

Error: "datasets[0]" must be a string

The command creates these files but I am unsure whether the files are intact:

app.py  my_metric.py  README.md  requirements.txt  tests.py

How to resolve this error?

using evaluate version 0.4.0