Error with custom document actions in Sanity Studio

TypeError: Cannot read properties of undefined (reading 'replace')
    at ActionMenuListItem (/static/js/app.bundle.js:495455:55)
    at renderWithHooks (/static/js/vendor.bundle.js:18134:18)
    at mountIndeterminateComponent (/static/js/vendor.bundle.js:20813:13)
    at beginWork (/static/js/vendor.bundle.js:21927:16)
    at HTMLUnknownElement.callCallback (/static/js/vendor.bundle.js:3519:14)
    at Object.invokeGuardedCallbackDev (/static/js/vendor.bundle.js:3568:16)
    at invokeGuardedCallback (/static/js/vendor.bundle.js:3623:31)
    at beginWork$1 (/static/js/vendor.bundle.js:26534:7)
    at performUnitOfWork (/static/js/vendor.bundle.js:25485:12)
    at workLoopSync (/static/js/vendor.bundle.js:25461:22)

export default function resolveDocumentActions(props: any) {
  if (props.type === "newsletter") {
    return [...defaultResolve(props), TestNewsletterAction];
  }

  return defaultResolve(props);
}