in what stares did you reside in 2019? how many days. does your old resident state have an income tax? does your present state of residence have an income tax?
as a GENERAL rule, if you live in two states with an income tax in the same year you would file two part-year resident returns. all your income would be reported as taxable in the first state. since you didn't earn any income in the second state, it depends on the laws in that state as to whether you need to file