50004: TypeError when sending request, msg: Cannot read properties of null (reading 'postMessage')

[karnveer1994]

This error is coming when I am going back and then forward in browser. on reload and without navigating to other pages its working fine.

const assessApp = LearnosityItems.init(data, {
readyListener: ()=> {
console.log("assessment started")
bindAssessmentAppEvents(assessApp, data.request.session_id, activityId)
},
errorListener: (error) => {

}

});

[karnveer1994]

https://items.learnosity.com/v1.122.3/dist/api.js

this is the script in which I am getting error

[anthony-murphy-lrn]

@karnveer1994 apologies for the delay in responding, could you please share some detail on this, how have you set up the data Object for instance, you might be missing some required properties or you might have some formatting issues.