Erros da API

{
  "data": null,
  "error": {
    "code": "validation_failed",
    "message": "Os dados enviados são inválidos.",
    "issues": [
      { "path": "buyer.document", "message": "O boleto exige CPF ou CNPJ." },
      { "path": "payment.billingAddress", "message": "O boleto exige o endereço de cobrança." }
    ],
    "requestId": "5b0f7a52-0d8e-4b51-9a57-1f0c6b7e2d10"
  },
  "errors": [
    { "code": "validation_failed", "message": "O boleto exige CPF ou CNPJ.", "path": "buyer.document" },
    { "code": "validation_failed", "message": "O boleto exige o endereço de cobrança.", "path": "payment.billingAddress" }
  ],
  "meta": { "requestId": "5b0f7a52-0d8e-4b51-9a57-1f0c6b7e2d10" }
}

async function callMinePag(path, init, attempt = 1) {
  const response = await fetch(`https://minepag.com.br/api/v1${path}`, init);
  if (response.ok) return response.json();

  const { error } = await response.json();
  const retryable = response.status === 429 || response.status >= 500;
  if (retryable && attempt < 4) {
    const waitSeconds = Number(response.headers.get('Retry-After')) || 2 ** (attempt - 1);
    await new Promise(resolve => setTimeout(resolve, waitSeconds * 1000));
    return callMinePag(path, init, attempt + 1);
  }
  throw Object.assign(new Error(error.message), { code: error.code, issues: error.issues, requestId: error.requestId });
}