unexpected local variable or method in varible Gitlab Omnibus

I have an install of Gitlab CE Omnibus installed on my raspberrypi4. I have gone into the config at /opt/gitlab/gitlab.rb to setup email for the install. When I did so (I also setup omniauth with azure at the same time), I get the following error.

Starting Chef Infra Client, version 15.14.0
resolving cookbooks for run list: ["gitlab"]
Synchronizing Cookbooks:
  - package (0.1.0)
  - gitlab (0.0.1)
  - logrotate (0.1.0)
  - postgresql (0.1.0)
  - registry (0.1.0)
  - redis (0.1.0)
  - monitoring (0.1.0)
  - letsencrypt (0.1.0)
  - nginx (0.1.0)
  - gitlab-kas (0.1.0)
  - consul (0.1.0)
  - mattermost (0.1.0)
  - praefect (0.1.0)
  - acme (4.1.1)
  - gitlab-pages (0.1.0)
  - gitaly (0.1.0)
  - runit (5.1.3)
  - crond (0.1.0)
Installing Cookbook Gems:
Compiling Cookbooks...

================================================================================
Recipe Compile Error in /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb
================================================================================

SyntaxError
-----------
/etc/gitlab/gitlab.rb:264: syntax error, unexpected local variable or method, expecting end-of-input
...ail will end up. Usually "inbox".
...                          ^~~~~

Cookbook Trace:
---------------
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/helpers/settings_helper.rb:106:in `block in from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/config_mash.rb:29:in `auto_vivify'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/helpers/settings_helper.rb:106:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/config.rb:22:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb:26:in `from_file'

Relevant File Content:
----------------------
/opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/helpers/settings_helper.rb:

 99:
100:    def from_file(_file_path)
101:      # Throw errors for unrecognized top level calls (usually spelling mistakes)
102:      config_strict_mode true
103:      # Turn on node deprecation messages
104:      Gitlab::Deprecations::NodeAttribute.log_deprecations = true
105:      # Allow auto mash creation during from_file call
106>>     Gitlab::ConfigMash.auto_vivify { super }
107:    ensure
108:      config_strict_mode false
109:      Gitlab::Deprecations::NodeAttribute.log_deprecations = false
110:    end
111:
112:    # Enhance set so strict mode errors aren't thrown as long as the setting is witin our defined config
113:    def internal_set(symbol, value)
114:      if configuration.key?(symbol)
115:        configuration[symbol] = value

System Info:
------------
chef_version=15.14.0
platform=raspbian
platform_version=10
ruby=ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [armv7l-linux-eabihf]
program_name=/opt/gitlab/embedded/bin/chef-client
executable=/opt/gitlab/embedded/bin/chef-client


Running handlers:
There was an error running gitlab-ctl reconfigure:

/etc/gitlab/gitlab.rb:264: syntax error, unexpected local variable or method, expecting end-of-input
...ail will end up. Usually "inbox".
...                          ^~~~~


Running handlers complete
Chef Infra Client failed. 0 resources updated in 09 seconds

Line 264 is ####! The mailbox where incoming mail will end up. Usually "inbox".

If I change line 264 to look like ####! The mailbox where incoming mail will end up. Usually inbox., I then get this error

Starting Chef Infra Client, version 15.14.0
resolving cookbooks for run list: ["gitlab"]
Synchronizing Cookbooks:
  - postgresql (0.1.0)
  - logrotate (0.1.0)
  - gitlab (0.0.1)
  - package (0.1.0)
  - consul (0.1.0)
  - redis (0.1.0)
  - monitoring (0.1.0)
  - gitlab-kas (0.1.0)
  - registry (0.1.0)
  - gitaly (0.1.0)
  - praefect (0.1.0)
  - nginx (0.1.0)
  - mattermost (0.1.0)
  - gitlab-pages (0.1.0)
  - acme (4.1.1)
  - runit (5.1.3)
  - letsencrypt (0.1.0)
  - crond (0.1.0)
Installing Cookbook Gems:
Compiling Cookbooks...

================================================================================
Recipe Compile Error in /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb
================================================================================

SyntaxError
-----------
/etc/gitlab/gitlab.rb:265: syntax error, unexpected local variable or method, expecting end-of-input
...g_email_mailbox_name'] = "inbox"
...                          ^~~~~

Cookbook Trace:
---------------
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/helpers/settings_helper.rb:106:in `block in from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/config_mash.rb:29:in `auto_vivify'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/helpers/settings_helper.rb:106:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/config.rb:22:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb:26:in `from_file'

Relevant File Content:
----------------------
/opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/helpers/settings_helper.rb:

 99:
100:    def from_file(_file_path)
101:      # Throw errors for unrecognized top level calls (usually spelling mistakes)
102:      config_strict_mode true
103:      # Turn on node deprecation messages
104:      Gitlab::Deprecations::NodeAttribute.log_deprecations = true
105:      # Allow auto mash creation during from_file call
106>>     Gitlab::ConfigMash.auto_vivify { super }
107:    ensure
108:      config_strict_mode false
109:      Gitlab::Deprecations::NodeAttribute.log_deprecations = false
110:    end
111:
112:    # Enhance set so strict mode errors aren't thrown as long as the setting is witin our defined config
113:    def internal_set(symbol, value)
114:      if configuration.key?(symbol)
115:        configuration[symbol] = value

System Info:
------------
chef_version=15.14.0
platform=raspbian
platform_version=10
ruby=ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [armv7l-linux-eabihf]
program_name=/opt/gitlab/embedded/bin/chef-client
executable=/opt/gitlab/embedded/bin/chef-client


Running handlers:
There was an error running gitlab-ctl reconfigure:

/etc/gitlab/gitlab.rb:265: syntax error, unexpected local variable or method, expecting end-of-input
...g_email_mailbox_name'] = "inbox"
...                          ^~~~~


Running handlers complete
Chef Infra Client failed. 0 resources updated in 09 seconds

Line 265 looks like # gitlab_rails['incoming_email_mailbox_name'] = "inbox" Uncommenting 265 gives me the exact same error.

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Gitlab version: GitLab Community Edition 13.9.2