Pterodactyl daemon error

> pterodactyl-daemon@0.3.7 start /srv/daemon
> node src/index.js | node_modules/bunyan/bin/bunyan -o short

23:25:21.026Z  INFO wings: + ------------------------------------ +
23:25:21.033Z  INFO wings: | Running Pterodactyl Daemon v0.3.7    |
23:25:21.034Z  INFO wings: |        https://pterodactyl.io        |
23:25:21.034Z  INFO wings: |  Copyright 2015 - 2016 Dane Everitt  |
23:25:21.034Z  INFO wings: + ------------------------------------ +
23:25:21.034Z  INFO wings: Loading modules, this could take a few seconds.
23:25:21.320Z  INFO wings: Modules loaded, starting Pterodactyl Daemon...
23:25:21.328Z  INFO wings: Checking container networking environment...
23:25:21.335Z  INFO wings: Attempting to start SFTP service container...
23:25:21.378Z  INFO wings: Found network interface for daemon: pterodactyl_nw
23:25:21.381Z  INFO wings: Checking pterodactyl0 interface and setting configuration values.
23:25:21.381Z  INFO wings: Checking gateway for pterodactyl0
23:25:21.385Z  WARN wings: Unable to locate a suitable SFTP container in the configuration, creating one now.
23:25:21.386Z  INFO wings: Checking if we need to update the SFTP container image quay.io/pterodactyl/scrappy:latest, if so it will happen now.
23:25:21.400Z  INFO wings: Gateway detected as 172.18.0.1 for pterodactyl0.
23:25:21.404Z  INFO wings: Attempting to load servers and initialize daemon...
23:25:21.407Z  INFO wings: Configuring websocket for daemon stats...
23:25:22.712Z  INFO wings: Pterodactyl Daemon is up-to-date!
23:25:24.687Z FATAL wings: A fatal error caused the daemon to stop abruptly.
    Error: (HTTP code 500) server error - driver failed programming external connectivity on endpoint stupefied_ride (cc6996898e279f6c21d8c4fb220bf2fb77eb4e9610a9ffda279a116fcd82b31a): Bind for 0.0.0.0:2022 failed: port is already allocated
        at /srv/daemon/node_modules/docker-modem/lib/modem.js:229:17
        at getCause (/srv/daemon/node_modules/docker-modem/lib/modem.js:259:7)
        at Modem.buildPayload (/srv/daemon/node_modules/docker-modem/lib/modem.js:228:5)
        at IncomingMessage.<anonymous> (/srv/daemon/node_modules/docker-modem/lib/modem.js:204:14)
        at emitNone (events.js:91:20)
        at IncomingMessage.emit (events.js:185:7)
        at endReadableNT (_stream_readable.js:974:12)
        at _combinedTickCallback (internal/process/next_tick.js:74:11)
        at process._tickDomainCallback (internal/process/next_tick.js:122:9)
    --
    additional: {
      "reason": "server error",
      "statusCode": 500,
      "json": {
        "message": "driver failed programming external connectivity on endpoint stupefied_ride (cc6996898e279f6c21d8c4fb220bf2fb77eb4e9610a9ffda279a116fcd82b31a): Bind for 0.0.0.0:2022 failed: port is already allocated"
      }
    }