Hypothesis is always null!

[csheblikar]

Hello, I downloaded and tested out this repo. Opened in Unity 2022.3.19f1. I didn't change anything and I am using Git LFS.
The example scene runs, but nothing happens. The hypothesis is always null. I record by pressing spacebar and say "this is a test", then stop recording by pressing spacebar again like the example suggests, and no keyphrase is recognized. The scene recognizes my microphone, and I tested that my microphone works in other applications.
Not sure what I'm doing wrong here? Please help!