UnhandledPromiseRejectionWarning: TypeError: body used already for PostmanCollection.js

[suryakantmaurya]

(node:65623) UnhandledPromiseRejectionWarning: TypeError: body used already for: https://verve4.vervesys.com/lokaly_postman-collection.js

Getting above error after set our postmanCollection js https://verve4.vervesys.com/lokaly_postman-collection.js inside documentation.js file

async function createJSONFile() {
try {
console.log("ORDER OF EXECUTION: 7")

const response = await fetch('https://verve4.vervesys.com/lokaly_postman-collection.js')
const json = await response.json()