Start by checking your data entry: especially state wages, state taxes withheld, etc.
What exactly did PA change that resulted in no refund? PA has a flat tax rate of than 3.07%, so the $1770 translates to $57,655 of income. Did you have a self-employment retirement plan? The amount you contributed towards it, which is excluded from tax on your federal return, is not excluded on your state one. The limit for employer and employee contributions for 2021 combined is $58,000.
Deductions and Credits (pa.gov)
