State tax filing

I appreciate the reply.  Is there anywhere to see the actual legal/tax syntax regarding this?  I guess I'm confused because I didn't think the PA Gov had anything to do with this.  I know I will still get credit to PA for taxes paid to DE, but I am unclear how Gov Wolf's disaster proclamation has anything to do with me still paying DE state taxes despite not being allowed into the state for a certain period of 2020, and not being permitted by my employer to enter my office between March 19 an Dec 31, 2020.