Cannot convert nlu from json to yaml file

[PessiPess]

h3. Rasa Open Source version

3.0.4

h3. Rasa SDK version

No response

h3. Rasa X version

No response

h3. Python version

3.8

h3. What operating system are you using?

Windows

h3. What happened?

I tried to convert nlu.json to yaml format by rasa data convert nlu --format yaml, but had an error: Could not recognize output format. Supported output formats: 'json' and 'yaml'. Specify the desired output format with '--format'.

[!https://user-images.githubusercontent.com/31157257/149146912-ace46595-2fc7-46cb-b10b-4a7cbead25d6.png!| https://user-images.githubusercontent.com/31157257/149146912-ace46595-2fc7-46cb-b10b-4a7cbead25d6.png]

Also, i checked source code of this command(and nlu converter): [!https://user-images.githubusercontent.com/31157257/149147247-8464703d-615d-4bd5-bb3d-afaccf6b5629.png!| https://user-images.githubusercontent.com/31157257/149147247-8464703d-615d-4bd5-bb3d-afaccf6b5629.png] [!https://user-images.githubusercontent.com/31157257/149147329-d7f147e1-47e4-4fcd-9766-02bcbea34081.png!| https://user-images.githubusercontent.com/31157257/149147329-d7f147e1-47e4-4fcd-9766-02bcbea34081.png]

Did converting nlu data to yaml support?

h3. Command / Request

rasa data convert nlu --format yaml

h3. Relevant log output

No response

[sara-tagger]

Thanks for raising this issue, @hsm207 will get back to you about it soon✨

Please also check out the docs and the forum in case your issue was raised there too 🤗

[gabrielbotelhoo]

I'm facing the same issue here.

[macfernandez]

Hi! Is this issue open to the community? If it is, I would like to work on it.

[SamuelNoB]

hi this issue is active? i've developed an solution and would like to submit a PR

[MarleenBor]

I am facing the same issue too

[wochinge]

fixed in #10991 . Will also create a backport for 2.8.x #10995