Accept collection based offers

[mustafa222lk]

Hey there,
I am trying to accept a collection based offer for my nft. Im retrieveing the offers from the opensea api endpoint and he choosing a offer randomly. I succeed when it comes to single nft absed offers but when i try to accept a collection based offer it doesnt work.

const { executeAllActions: fulfillOrder } = await spClient.fulfillOrder({ order, accountAddress: this.walletAddress, considerationCriteria: [{ identifier: tokenId, proof: new MerkleTree([tokenId]).getProof(tokenId, 1) }] });
This is my code. Im not sure if im generating a wrong merkle proof or not.

Getting this error:
: invalid arrayify value (argument="value", value={"position":"left","data":{"type":"Buffer","data":[71,71]}}, code=INVALID_ARGUMENT, version=bytes/5.6.1)

What am i doing wrong ?

[ryanio]

You need the info from this endpoint to fulfill an offer: https://docs.opensea.io/reference/fulfill-an-offer