Hitting Claim button JS error

[tareshss]

Error:
Claim.ts:50 Uncaught (in promise) TypeError: Cannot read property 'hexToBytes' of undefined
at Claim.ts:50
at

On Line 50
let tx = Core.Transaction.deserializeFrom(this.strTx.hexToBytes().buffer);

On Line 81
this.strTx = res["transaction"];

is never assigned because the res object has no property "transaction" even when res["result"] == true

conditions:
Available Gas: 0
Unavailable Gas: 0.06031040