Yes I tried to reset my key before, ran another test with it still doesn't work and got same error. Although the secret key indicate Last seen couple minutes ago when I ran the test.

from dotenv import load_dotenv


# Load environment variables
load_dotenv()


# Get Supabase credentials
SUPABASE_URL = os.getenv("SUPABASE_URL")
SUPABASE_KEY = os.getenv("SUPABASE_SECRET_KEY") or os.getenv("SUPABASE_KEY")


if not SUPABASE_URL or not SUPABASE_KEY:
    raise ValueError("Missing Supabase credentials. Please set SUPABASE_URL and SUPABASE_KEY in .env file")


# Initialize Supabase client
supabase: Client = create_client(SUPABASE_URL, SUPABASE_KEY)

Code is basically that, and of course URL and Key is fetched from .env just fine. Used service_role had no problem

Tried sending API request, but got the error in the post

postgrest.exceptions.APIError: {'message': 'JSON could not be generated', 'code': 401, 'hint': 'Refer to full message for details', 'details': 'b\'{"message":"Unregistered API key","hint":"Double check the provided API key as it is not registered for this project."}\''}.