Unexpected error in Flowdo ck client: Error: Received status 500

[suripaleru]

Installed hubot with flowdock adapter but getting 500 error. Flowdock is opening from the same machine and robot name is same as flowdock login name. Hubot added to flows also.

C:\hubot>.\bin\hubot -a flowdock
audited 252 packages in 1.573s
found 7 moderate severity vulnerabilities
run npm audit fix to fix them, or npm audit for details
[Mon Dec 16 2019 13:51:14 GMT+0200 (GMT+02:00)] INFO Ignoring all messages from
user ids 0

[Mon Dec 16 2019 13:51:14 GMT+0200 (GMT+02:00)] WARNING Loading scripts from hub
ot-scripts.json is deprecated and will be removed in 3.0 (https://github.com/git
hub/hubot-scripts/issues/1113) in favor of packages for each script.

Your hubot-scripts.json is empty, so you just need to remove it.
[Mon Dec 16 2019 13:51:14 GMT+0200 (GMT+02:00)] ERROR hubot-heroku-keepalive inc
luded, but missing HUBOT_HEROKU_KEEPALIVE_URL. heroku config:set HUBOT_HEROKU_K EEPALIVE_URL=$(heroku apps:info -s | grep web.url | cut -d= -f2)
[Mon Dec 16 2019 13:51:15 GMT+0200 (GMT+02:00)] ERROR Unexpected error in Flowdo
ck client: Error: Received status 500 :: Response Text: undefined

Hubot-flowdock dependencies

"dependencies": {
    "hubot": "^3.3.2",
    "hubot-diagnostics": "^1.0.0",
    "hubot-flowdock": "^0.7.8",
    "hubot-google-images": "^0.2.7",
    "hubot-google-translate": "^0.2.1",
    "hubot-help": "^1.0.1",
    "hubot-heroku-keepalive": "^1.0.3",
    "hubot-maps": "0.0.3",
    "hubot-pugme": "^0.1.1",
    "hubot-redis-brain": "^1.0.0",
    "hubot-rules": "^1.0.0",
    "hubot-scripts": "^2.17.2",
    "hubot-shipit": "^0.2.1"
  },

Any help will be greatly appreciated.