Error after creating a signature request using text tags

[hjklqw]

Am trying to send a signature request using text tags. I am sending the request exactly as in the samples, eg.

const opts = {
  test_mode: 1,
  subject: 'The NDA we talked about',
  message: 'Please sign this NDA and then we can discuss more.',
  signers: [
    {
      email_address: 'alice@example.com',
      name: 'Alice',
    },
    {
      email_address: 'bob@example.com',
      name: 'Bob'
    }
  ],
  files: ['NDA.pdf'],
  use_text_tags: 1,
};

await hellosign.signatureRequest.createEmbedded(opts)

And the API request succeeds, but when I check my documents in the management portal, it says "an error occurred" under the Status column. The error is:

Text tags error: No reference found in signer list to components labeled signer 1

The text tags in the document look like this:

[text|noreq|signer1]
[sig|req|signer1]

[sig|req|signer2]

Every signer has at least a signature field.

I noticed that if I reduce the amount of signers to just 1 (with the text tags updated to thus only have signer1), this error does not occur. However, no email notification is sent to the signer.