相続トラブルは思いがけず誰にでも起こり得るものなのだと実感した

I have been thinking that trouble with inheritance is only on TV.
But actually, I got involved in that.
I learned from the Judicial Clerk this time that my uncle passed away two years ago.
He said that my uncle had his wife as an heir, and since she passed away this time, her niece is handling the inheritance procedures.
The Judicial Clerk said he wants me to sign an inheritance waiver.
If I do not sign the inheritance waiver, he said there is a possibility that hidden debts could come out.
I think this is probably a way for the niece to monopolize the property.
I’m confused about whether I should sign the inheritance waiver or not at this point.

↓Japanese translation and text-to-speech here↓