Deployment fails with Relative link is not saved

[aguschin]

reported in discord:

---

Hey all -- I'm trying to follow the mlem user-guide at https://mlem.ai/doc/user-guide/deploying/heroku/ and I can't pass that point:

mlem deployment run --load app.mlem \
--model=models/rf                                                              
⏳️ Loading model from models/rf.mlem
⏳️ Loading deployment from app.mlem
❌ Relative link is not saved

mlem --tb deployment run --load app.mlem --model=models/rf
⏳️ Loading model from models/rf.mlem
⏳️ Loading deployment from app.mlem
Traceback (most recent call last):
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/bin/mlem", line 8, in <module>
    sys.exit(app())
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/typer/main.py", line 328, in __call__
    raise e
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/typer/main.py", line 311, in __call__
    return get_command(self)(*args, **kwargs)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/typer/core.py", line 778, in main
    return _main(
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/typer/core.py", line 216, in _main
    rv = self.invoke(ctx)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/click/core.py", line 1635, in invoke
    rv = super().invoke(ctx)
  File "/Users/pmoreira/data/scrap/prixsa-


[1:27 AM]
app/.venv/lib/python3.10/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/typer/main.py", line 683, in wrapper
    return callback(**use_params)  # type: ignore
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/cli/main.py", line 507, in inner
    f(*iargs, **ikwargs)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/cli/main.py", line 370, in inner
    return f(*args, **kwargs)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/cli/deployment.py", line 87, in deploy_run_callback
    deploy(
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/telemetry.py", line 50, in inner
    return f(*args, **kwargs)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/api/commands.py", line 480, in deploy
    deploy_meta.get_env()
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/core/objects.py", line 1314, in get_env
    self.env_cache = link.load_link(force_type=MlemEnv)
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/core/objects.py", line 366, in load_link
    link = self.parse_link()
  File "/Users/pmoreira/data/scrap/prixsa-app/.venv/lib/python3.10/site-packages/mlem/core/objects.py", line 388, in parse_link
    raise MlemObjectNotSavedError("Relative link is not saved")
mlem.core.errors.MlemObjectNotSavedError: Relative link is not saved

$ mlem --version
🐶 MLEM Version: 0.4.5