Hi all, I try to connect a rest-api with the extractor tap_rest_api_msdk. I get this error. Operator '__else__=None' was not found. Unmapped streams will be included in output. Could you help me?

time=2022-04-29 11:12:57 name=tap-rest-api-msdk level=INFO message=tap-rest-api-msdk v1.0.0, Meltano SDK v0.3.18)
time=2022-04-29 11:12:57 name=tap-rest-api-msdk level=INFO message=Skipping parse of env var settings...
time=2022-04-29 11:12:57 name=tap-rest-api-msdk level=INFO message=Config validation passed with 0 errors and 0 warnings.
time=2022-04-29 11:12:57 name=root level=INFO message=Operator '__else__=None' was not found. Unmapped streams will be included in output.
Traceback (most recent call last):
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/bin/tap-rest-api-msdk", line 8, in <module>
    sys.exit(TapRestApiMsdk.cli())
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/singer_sdk/tap_base.py", line 442, in cli
    tap = cls(  # type: ignore  # Ignore 'type not callable'
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/singer_sdk/tap_base.py", line 83, in __init__
    self.input_catalog or self._singer_catalog
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/singer_sdk/tap_base.py", line 219, in _singer_catalog
    for stream in self.streams.values()
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/singer_sdk/tap_base.py", line 109, in streams
    for stream in self.load_streams():
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/singer_sdk/tap_base.py", line 248, in load_streams
    for stream in self.discover_streams():
  File "/project/.meltano/extractors/tap-rest-api-msdk/venv/lib/python3.8/site-packages/tap_rest_api_msdk/tap.py", line 184, in discover_streams
    for stream in self.config["streams"]:
KeyError: 'streams'

I don't think the "else = None" message is an error... it's just telling you that for streams with no mapper it's going to pass the stream through (which is usually what you want).

I think the tap's config is missing the

streams

setting value

That is true, thank you both for the fast reply. I'll add these.