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Question

我想使用Metaplex SDK与react创建一个NFT。但是当我执行这个函数时，它会抛出以下错误:

AccountNotFoundError: 
The account of type [MintAccount] was not found at the provided address 
[7SYH47nGcK5fnMmf6zoW75BWpdxDAyq8DBRbagMdsPKJ].

这是我要执行的函数:

async function mint() {
const links = await uploadMetadata();
console.log("Cover: " + links.cover);
console.log("Text: " + links.text);
console.log("Metadata: " + links.metadata);
const { nft } = await metaplex.nfts().create({
uri: links.metadata,
name: title,
sellerFeeBasisPoints: 500, // Represents 5.00%.
});
console.log(nft);
}```

Answer 1

这是一个元plex SDK错误。

问题是metaplex sdk在写入solana后试图读取。这样做的问题显然是，这些更改尚未在整个供应链中传播。

要解决这个问题，请添加可选的承诺参数{ commitment: "finalized" }

你的代码现在看起来像这样

async function mint() {
const links = await uploadMetadata();
console.log("Cover: " + links.cover);
console.log("Text: " + links.text);
console.log("Metadata: " + links.metadata);
const { nft } = await metaplex.nfts().create(
{
uri: links.metadata,
name: title,
sellerFeeBasisPoints: 500, // Represents 5.00%.
},
{ commitment: "finalized" }
);
console.log(nft);
}

Answer 2

我解决问题的方法这是不直接使用nfts().create({})这样的方法;相反，可以将它们与事务构建器模块一起使用。

所以这个例子看起来像这样:

const createNftBuilder = await metaplex.nfts().builders().create({
uri: links.metadata,
name: title,
sellerFeeBasisPoints: 500, // Represents 5.00%.
});
// Get the data that you don't know in advance from getContext()
const { mintAddress } = transactionBuilder.getContext();
// Submit the tx
await metaplex
.rpc()
.sendAndConfirmTransaction(createNftBuilder, { commitment: "confirmed" });

这样，SDK就不会过早地获取链上数据。问题是，你最终写了很多代码，你不能得到nft对象在相同的方式与上面。

Answer 3

这对我有用:

const transactionBuilder = await metaplex.nfts().builders().create({ ... });
const { mintAddress } = transactionBuilder.getContext();
await metaplex.rpc().sendAndConfirmTransaction(transactionBuilder);
// Then, optionally fetch the NFT afterwards after sleeping for 2 seconds. 🤢
await new Promise(resolve => setTimeout(resolve, 2000))
const nft = await metaplex.nfts().findByMint({ mintAddress });

从https://github.com/metaplex-foundation/js/issues/344# issuecomment - 1325265657