Overpayment letter from the unemployment office - 6 months and counting

I received a letter saying I was overpaid about $150 on my claim. This is my first time dealing with any of this. I did not notice any errors at the time.

If you are unsure, free legal aid in your area may help for this kind of notice.

I asked for a waiver and a plan in the same call, and they gave me both forms. It was less scary than I expected.