Can't convert with external audios.

[Pyloupy]

Hi,
Firstly thanks if you read this and you can help me.
I don't know why, but with my models that i trained i can only convert audio recording from audacity.
When i try to use a downloaded audio like youtube mp3 or even with obs and then converted by audacity it just doesnt work and get me an error after excatly 5.6s each time.
I did multiples fresh installation with multiples python versions (3.10 and 3.9).
The thing is that i've got no error in the console so im hopeless.
here's some screenshots so you can understand better.



Thank you in advance if you can help me!