Many users report this error when using a VPN or having a mismatch between their IP location and Steam's download region. Try turning off your VPN
If the API supports a quality=normal or quality=1 parameter, try that. If it works, the problem is specifically with the two extra quality features (e.g., they require an auxiliary service like Redis or a secondary database). Many users report this error when using a
To solve the problem, we have to deconstruct the error code: try that. If it works