State tax filing

I HAVE THE SAME SITUATION, ONLY I DID PAY THE TAXES IN PENNSYLVANIA. WHY ON EARTH IS DELAWARE CLAIMING I OWE THEM?  LAST YEAR IT WAS $19.  THIS YEAR IT'S SHOWING i OWE THEM UPWARDS OF $155O.  WHAT IS GOING ON ? WHY AM I BEING TAXED IN DELAWARE WHERE i LIVE BUT HAVE ONLY WORKED IN PENNSYLVANIA?  THIS IS NOT RIGHT! Also.. what is this amount being based on? 

I received about 17K from unemployment due to the pandemic, less than 2K with one of my part time jobs and only 4K with the other.  why on earth would I have to pay upwards of over a grand to delaware ?  something is definitely wrong!  I am typically below poverty level income as it is.  and because I received 17K in unemployment having taxes taken out before getting paid, I seriously think something isnt right.  someone please help!