Tax Year Prior to 2020: Baltimore City is not an option, cannot efile

The software keeps asking me to enter a county from the dropdown menu under the locality information section. The form explicitly says leave blank if baltimore city. I do this and the software keeps bringing me back to this section as an error, leaving me unable to e-file (even though i already paid). Baltimore city is not an option in the dropdown menu, so this error needs to be corrected ASAP so i can file my taxes.