Recent notifications retrieval (API) returns an error

Dear fellow developers,

I've setup Spark 3.0 pretty easily and started devleoping an app.

I find it pretty annoying to find the exact same issue that made me quit developing my previous app with Spark (back in v 0.x) and come back in v3 to see that recent notifications API call fails (randomly apparently, and I still can't explain it).

The call to :

http://localhost:8000/notifications/recent (GET)

returns :

401 Unauthorized

{"error":"Unauthenticated."}

Does anyone have the same problem? Had in the past and found a way to solve?

Thanks in advance.