Given claim_script does not match the given Bitcoin transaction.

I can't find a way to claim the peg-in on the liquid network. If any more information is necessary, ask me. Thanks for your help.

Node versions used:

Bitcoin Core v26
Elements Core v22.1.1

Contents of elements.conf

server=1
listen=1
txindex=1
validatepegin=1
mainchainrpccookiefile=/media/data/.cookie
nrpccookiefile=/media/elements/data/liquidv1/.cookie
maxconnections=20

At this time blockstream indicates that the transaction has 107 confirmations.

Proof is like three times longer than raw

raw length: 380
proof length: 1016

I'm trying to claim a peg-in and I get the following error:

elements-cli claimpegin <claim_script>

error code: -8
error message:
Given claim_script does not match the given Bitcoin transaction.

I have gone over all the points of the process, both peg-in and claim, and I don't see where I am making the mistake.