Error starting Looker: url A URL is required. (code: missing_field)

[BenBen]

[ERROR|007e4|main] :: Error starting Looker: url A URL is required. (code: missing_field)
  uri:classloader:/bundler/gems/sequel-084253ffa73d/lib/sequel/model/base.rb:1824:in `save'
  uri:classloader:/helltool/lib/helltool/models/encrypted/integration_hub.class:63:in `ensure_official_hub!'
  uri:classloader:/helltool/lib/roles/common/runner.class:439:in `ensure_official_hub'
  uri:classloader:/helltool/lib/roles/common/runner.class:110:in `post_roles_start'
  uri:classloader:/helltool/lib/runner.class:96:in `start'
  uri:classloader:/helltool/lib/helltool/cli.class:85:in `start'
  uri:classloader:/gems/thor-0.15.4/lib/thor/task.rb:27:in `run'
  uri:classloader:/gems/thor-0.15.4/lib/thor/invocation.rb:120:in `invoke_task'
  uri:classloader:/gems/thor-0.15.4/lib/thor.rb:275:in `dispatch'
  uri:classloader:/gems/thor-0.15.4/lib/thor/base.rb:425:in `start'
  uri:classloader:/helltool/bin/helltool:41:in `<main>'
  org/jruby/RubyKernel.java:1009:in `load'
  uri:classloader:/META-INF/main.rb:1:in `<main>'
  org/jruby/RubyKernel.java:974:in `require'
  uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:54:in `require'
  <script>:3:in `<main>'