Now I am trying to implement NFT purchasing functionality based on a substrate node.
I got this function from the polkadot js documentation.
buyItem(collection: u32, item: u32, bid_price: u128) interface: api.tx.uniques.buyItem summary: See [Pallet::buy_item].
but when I try this function. I got this (the image)
Of course, the function caller is a buyer.
I hope to get any advice to get this works.