Penalty on early withdrawal of savings - Why?

Hi TurboTax experts! 

 

For the first time ever, I have "penalty on early withdrawal of savings" on my taxes. 

 

I did not withdraw money from my retirement accounts. I did the usual backdoor Roth IRA conversion from Traditional IRA and a mega backdoor 401k conversion: The first does not show taxable amount in 4b of 1040, and the latter marked as ROLLOVER in 5b. 

 

Any guidance on why do I have an early withdrawal penalty? 

 

Thank you for your guidance!