I'm working on a front-end. I want to fetch all the NFT of a specific collection the user owns. I used to do:

const tokens = await metaplex
    .findAllByOwner({ owner: provider.publicKey });

But I recently noticed this returned an empty array even though the wallet I'm using has the tokens. To bypass this issue, I started using getProgramAccounts like so to get it to work properly:

const mints = (
  await provider.connection.getParsedTokenAccountsByOwner(
    { programId: TOKEN_PROGRAM_ID }
  .filter((e) => e.account.data.parsed.info.tokenAmount.uiAmount === 1)
  .map((e) => new PublicKey(e.account.data.parsed.info.mint));
const accounts: (Nft | null)[] = (
  await Promise.all(
    mints.map(async (e) => {
      try {
        return (await metaplex
          .findByMint({ mintAddress: e })) as any;
      } catch {
        return null;

Is there an explanation for this? Is there a way to make the old expression work? It's much more compact and easier to read.

  • did you add a check if provider.publicKey is not equal to undefined ?
    – Pratik.js
    Nov 13, 2022 at 16:05
  • Yes I do and the other way of fetching data works. Nov 13, 2022 at 17:47

1 Answer 1


It turns out to be a provider error: I switched from using Alchemy provider to Helius and it now works as expected.

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