The web-ui does not properly handle broken api certificates.
If the certificate is invalid it displayes "Internal Server Error" and the following backtrace is shown in the terminal:
2017-10-11` 18:42:58 - NoMethodError - undefined method `body' for nil:NilClass:
/var/lib/vhostapi/web-ui/app/helpers/api_helper.rb:123:in `parse_apiresponse'
/var/lib/vhostapi/web-ui/app/controllers/auth_controller.rb:18:in `rescue in block in <top (required)>'
/var/lib/vhostapi/web-ui/app/controllers/auth_controller.rb:9:in `block in <top (required)>'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1632:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1632:in `block in compile!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:991:in `block (3 levels) in route!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1010:in `route_eval'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:991:in `block (2 levels) in route!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1037:in `block in process_route'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1035:in `catch'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1035:in `process_route'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:989:in `block in route!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:988:in `each'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:988:in `route!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1094:in `block in dispatch!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1073:in `block in invoke'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1073:in `catch'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1073:in `invoke'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1091:in `dispatch!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:923:in `block in call!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1073:in `block in invoke'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1073:in `catch'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1073:in `invoke'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:923:in `call!'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:913:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-2.0.3/lib/rack/session/abstract/id.rb:232:in `context'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-2.0.3/lib/rack/session/abstract/id.rb:226:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-2.0.3/lib/rack/deflater.rb:34:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-protection-2.0.0/lib/rack/protection/xss_header.rb:18:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-protection-2.0.0/lib/rack/protection/path_traversal.rb:16:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-protection-2.0.0/lib/rack/protection/json_csrf.rb:26:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-protection-2.0.0/lib/rack/protection/base.rb:50:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-protection-2.0.0/lib/rack/protection/base.rb:50:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-protection-2.0.0/lib/rack/protection/frame_options.rb:31:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-2.0.3/lib/rack/null_logger.rb:9:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-2.0.3/lib/rack/head.rb:12:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/rack-2.0.3/lib/rack/method_override.rb:22:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:194:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1955:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1499:in `block in call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1726:in `synchronize'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.0/lib/sinatra/base.rb:1499:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/puma-3.10.0/lib/puma/configuration.rb:225:in `call'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/puma-3.10.0/lib/puma/server.rb:605:in `handle_request'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/puma-3.10.0/lib/puma/server.rb:437:in `process_client'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/puma-3.10.0/lib/puma/server.rb:301:in `block in run'
/var/lib/vhostapi/web-ui/vendor/bundle/ruby/2.4.0/gems/puma-3.10.0/lib/puma/thread_pool.rb:120:in `block in spawn_thread'
The web-ui does not properly handle broken api certificates.
If the certificate is invalid it displayes "Internal Server Error" and the following backtrace is shown in the terminal: