The landlord is asking for reissuing a cheque. Is it acceptable?

Dear questioner,

My current landlord is asking me to reissue a cheque he lost from my due payments 4 years back.

I have a photocopy of the cheque I gave him, with his signature, and what he claims is that due to some error on their side, they didn’t cash it back then, and now they got rid of the cheque as it is invalid after this time.

What grounds do he have to ask for this?

Can I simply reject it? After 4 years I closed my books for 2018.