Sending XDM event from custom code

launch-450e00021d4f.min.js:16 Uncaught (in promise) Error: [alloy] The library must be configured first. Please do so by executing the configure command.
    at s (launch-450e00021d4f.min.js:16:15982)
    at launch-450e00021d4f.min.js:16:16678
    at new Promise (<anonymous>)
    at launch-450e00021d4f.min.js:16:16647
    at <anonymous>:1:1

there's issue in launch or alloy library, we are not getting this error on otherr iframe pages. this is error coming from alloy('sendEvent', {
      'xdm': clone(xdmLinkObject)
    })

which sends server call

whole code is running in iframe, we are fetching values present in dataLayer from iframe on main page.