opsdroid: Error when starting with matrix-connector

When I try to start opsdroid I keep getting the following error. I double checked indentation and when I delete the matrix-connector part opsdroid starts fine.

opsdroid_1     | Error validating data /root/.config/opsdroid/configuration.yaml with schema /usr/src/app/opsdroid/configuration/schema.yaml
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.webhook-url: Required field missing
opsdroid_1     | 	connectors.1.access-token: Required field missing
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.verify-token: Required field missing
opsdroid_1     | 	connectors.1.page-access-token: Required field missing
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.mxid: 'xxx' is not a regex match.
opsdroid_1     | 	connectors.1.room: Required field missing
opsdroid_1     | 	connectors.1.rooms.main: 'xxx' is not a regex match.
opsdroid_1     | 	connectors.1.rooms.other: 'xxx' is not a regex match.
opsdroid_1     | 	connectors.1.homeserver: 'xxx' is not a regex match.
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.api-token: Required field missing
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.token: Required field missing
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.consumer_key: Required field missing
opsdroid_1     | 	connectors.1.consumer_secret: Required field missing
opsdroid_1     | 	connectors.1.oauth_token: Required field missing
opsdroid_1     | 	connectors.1.oauth_token_secret: Required field missing
opsdroid_1     | 	connectors.1.name: 'matrix' is not a regex match.
opsdroid_1     | 	connectors.1.room-id: Required field missing
opsdroid_1     | 	connectors.1.access-token: Required field missing

Configuration File

##                      _           _     _
##   ___  _ __  ___  __| |_ __ ___ (_) __| |
##  / _ \| '_ \/ __|/ _` | '__/ _ \| |/ _` |
## | (_) | |_) \__ \ (_| | | | (_) | | (_| |
##  \___/| .__/|___/\__,_|_|  \___/|_|\__,_|
##       |_|
##                   __ _
##   ___ ___  _ __  / _(_) __ _
##  / __/ _ \| '_ \| |_| |/ _` |
## | (_| (_) | | | |  _| | (_| |
##  \___\___/|_| |_|_| |_|\__, |
##                        |___/
##
## A default config file to use with opsdroid
## see https://github.com/opsdroid/opsdroid/blob/master/opsdroid/configuration/example_configuration.yaml for more config options

## Set the logging level
logging:
  level: info
  path: opsdroid.log
  console: true

## Show welcome message
welcome-message: true

## Connector modules
connectors:

  - name: websocket
    # optional
    bot-name: "mybot" # default "opsdroid"
    max-connections: 10 # default is 10 users can be connected at once
    connection-timeout: 10 # default 10 seconds before requested socket times out

  ## Matrix (core)
  - name: matrix
    # Required
    mxid: "xxx"
    password: "xxx"
    # a dictionary of multiple rooms
    # One of these should be named 'main'
    rooms:
      'main': 'xxx'
      'other': 'xxx'
    # Optional
    homeserver: "xxx"
    nick: "xxx"  # The nick will be set on startup
    room_specific_nicks: False  # Look up room specific nicknames of senders (expensive in large rooms)

## Skill modules
skills:

  ## Dance (https://github.com/opsdroid/skill-dance)
  - name: dance

  ## Hello (https://github.com/opsdroid/skill-hello)
  - name: hello

  ## Loudnoises (https://github.com/opsdroid/skill-loudnoises)
  - name: loudnoises

  ## Seen (https://github.com/opsdroid/skill-seen)
  - name: seen