[BUG] fiftyone app launch terminates instantly in v1.0.0

[Laurent2916]

Describe the problem

In v0.25.2 I used to start fiftyone by doing: fiftyone app launch and everything worked fine.
I upgraded to v1.0.0, but now executing the same command doesn't work like it used to (see "Code to reproduce issue" below).

Current work-around is to start the server directly:

python $(python -c "from fiftyone.server import main; print(main.__file__)") --port 4545

As a side-note, is it possible to downgrade (temporarily) ? It seems the app won't let me re-use v0.25.2 now that it migrated to v1.0.0.

Code to reproduce issue

(.venv) laurent@laptop:~/fiftyone_data$ fiftyone app launch --port 4545
App launched. Point your web browser to http://localhost:4545

To exit, close the App or press ctrl + c
# the server terminates instantly here, without any error message

System information

• OS Platform and Distribution: Ubuntu 24.04 LTS
• Python version: Python 3.10.14
• FiftyOne version: FiftyOne v1.0.0
• FiftyOne installed from: rye (which uses uv)

Willingness to contribute

• Yes. I can contribute a fix for this bug independently
• Yes. I would be willing to contribute a fix for this bug with from the FiftyOne community
• No. I cannot contribute a bug fix at this time

[brimoor]

Apologies, this is fixed by #4888 and will be released as part of fiftyone=1.0.1.

In the meantime, on fiftyone==1.0.0 you'll need launch the App via launch_app() in Python.