Github code search is not working for a certain forked repo

Hello, I wonder why the following query is not returning any results. I’m properly using the access token.

it’s a forked repository but it has more starts than the parent one. Which one would be the cause ?

https://api.github.com/search/code?q=import+streamlit+in:file+fork:true+repo:arraydude%2Fsimpleapp

Result:

{
  "total_count": 0,
  "incomplete_results": false,
  "items": [

  ]
}

Many thanks!