cannot reproduce xxxplatform example with slack and messenger

The connections work individually but dont mesh together like in the example and i used a Ngrok server to test

so when i tried Messenger alone i get a response
but when i combine them like in the example i only get slacks object output
and messenger gives me an error

please advice cuz im quite new to node and angular My Code :

const` Rx = `require("rxjs/Rx");
const R = require("ramda");

const BroidSlack = require("@broid/slack");
const BroidMessenger = require("@broid/messenger");

const FACEBOOK_ACCESS_TK = "EAACyaH0LpzJVuqJz4sBMZCyqpxZBKxvsz7MiLPcHGMKXZAotQsyCJN16VBLJ7rFv1ykdR2urZCmoRgNvjmRLWbHcsAR59KpcC7c3oEZBVEEpJgjT2I07BbPwb2xxpMzEWYEJik3B2R7fhJNCc4jmg3ZAb4N102yCO5ksZCkAZCQ1VIhZBeDq7ZACW4ZD" ;
const VERIFY_TK = "broidtestbot" ;

const clients = {

  messenger: new BroidMessenger({token: FACEBOOK_ACCESS_TK ,
  tokenSecret:VERIFY_TK ,
    http: {
    host: '0.0.0.0',
    port: 5000
  }}),  
  slack: new BroidSlack({token: 'xoxb-389-387469850096-Iz6XwU4u7io4dt8XhdwTkiSR',
    http: {
    host: '127.0.0.1',
    port: 5000
  }}),

};
console.log('point 2 rite before the merge calling');
Rx.Observable.merge(...R.map(client => client.connect(), R.values(clients)))

Rx.Observable.merge(...R.map(client => client.listen(), R.values(clients)))

.subscribe({
  next: data => console.log(JSON.stringify(data, 1, 3)),
  error: err => console.error(err),
});`

Error (only occurs when i try to send something from messenger) :

SyntaxError: Unexpected token u in JSON at position 0 at JSON.parse (<anonymous>) at MergeMapSubscriber.parseWebHookEvent [as project] (D:\Testing\testbroidfbandslack\node_modules\@broid\slack\lib\core\helpers.js:69:26) at MergeMapSubscriber._tryNext (D:\Testing\testbroidfbandslack\node_modules\@broid\slack\node_modules\rxjs\operators\mergeMap.js:122:27) at MergeMapSubscriber._next (D:\Testing\testbroidfbandslack\node_modules\@broid\slack\node_modules\rxjs\operators\mergeMap.js:112:18) at MergeMapSubscriber.Subscriber.next (D:\Testing\testbroidfbandslack\node_modules\@broid\slack\node_modules\rxjs\Subscriber.js:93:18) at EventEmitter.handler (D:\Testing\testbroidfbandslack\node_modules\@broid\slack\node_modules\rxjs\observable\FromEventObservable.js:210:46) at emitOne (events.js:116:13) at EventEmitter.emit (events.js:211:7) at router.post (D:\Testing\testbroidfbandslack\node_modules\@broid\slack\lib\core\Adapter.js:312:26) at Layer.handle [as handle_request] (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\layer.js:95:5) at next (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\route.js:137:13) at Route.dispatch (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\route.js:112:3) at Layer.handle [as handle_request] (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\layer.js:95:5) at D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:281:22 at Function.process_params (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:335:12) at next (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:275:10) at Function.handle (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:174:3) at router (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:47:12) at Layer.handle [as handle_request] (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\layer.js:95:5) at trim_prefix (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:317:13) at D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:284:7 at Function.process_params (D:\Testing\testbroidfbandslack\node_modules\express\lib\router\index.js:335:12)

broidHQ / broid-kit

cannot reproduce xxxplatform example with slack and messenger #32