You may of course consider:
Am I producing debugging information?
Have I activated the debug mode of the Interactive Brokers data?
Is 10-seconds asking for too many when looking backwards to 2019-01-01?
Am I attempting a historical download or do I want to trade real-time?
Am I talking to the Fake-Data Demo, Paper Trading Account or Live Trading Account?
Do I have the right data permissions?
That's the minimum information you should have at hand. Algotrading involves engineering and being thorough. And sorry, comparing a Yahoo download with connecting to a live broker (even if in Fake Data mode) is not really a comparison.