'LOST IN SPACE' page

[Deleted user]

i am trying to add paytm payment gateway to a cordova app.
The checksum is being generated but i am getting transfered to Lost in Space page says 'session expired'

let txnRequest = {
"MID": "AIoJSB06647351746673", // PayTM Credentials
"ORDER_ID": "ORDER0000000411", // Should be unique for every order.
"CUST_ID": "CUSTOMER0001",
"INDUSTRY_TYPE_ID": "Retail", // PayTM Credentials
"CHANNEL_ID": "WAP", // PayTM Credentials
"TXN_AMOUNT": "1", // Transaction Amount should be a String
"WEBSITE": "APPSTAGING" // PayTM Credentials
}
const successCallback = (response) => {
console.log('success', response)
}
const failureCallback = (error) => {
console.log('Failure', error)
}
txnRequest.CALLBACK_URL = "https://securegw-stage.paytm.in/theia/paytmCallback?ORDER_ID=" + txnRequest.ORDER_ID
paytm_checksum.genchecksum(txnRequest, '******', function (err, checksum) {
txnRequest["CHECKSUMHASH"] = checksum
txnRequest["ENVIRONMENT"] = "staging"
console.log(txnRequest)
//OUTPUT OF txnRequest
// CALLBACK_URL: "https://securegw-stage.paytm.in/theia/paytmCallback?ORDER_ID=ORDER0000000411"
// CHANNEL_ID: "WAP"
// CHECKSUMHASH: "4LMMteW4mUioTKMySoUSZNcIboLN/t6XRex1DPxScZ+M0vOJEMt6nzKgl6TMK8qYSSxUaTD/tRtfvLRnVpAjou7j42wOD8G5lPzXlAMQOBA="
// CUST_ID: "CUSTOMER0001"
// ENVIRONMENT: "staging"
// INDUSTRY_TYPE_ID: "Retail"
// MID: "AIoJSB06647351746673"
// ORDER_ID: "ORDER0000000411"
// TXN_AMOUNT: "1"
// WEBSITE: "APPSTAGING"
window.paytm.startPayment(
txnRequest,
successCallback,
failureCallback
);
});

[ArunYogi]

@eggandmoney,
Does paytm error page shows any other information apart from "Lost in space", because sometime, if param is wrong paytm shown the incorrect information in the same page. If that's the not case, please get adb log along with params and post to paytm for resolution.