save dashboard error

[hoangnguyengia]

To save your changes to the server, press s

Error:

2019-07-31 10:12:52 - MultiJson::DecodeError - 765: unexpected token at '': /usr/lib/ruby/2.5.0/json/common.rb:156:in parse' /usr/lib/ruby/2.5.0/json/common.rb:156:in parse' /var/lib/gems/2.5.0/gems/multi_json-1.3.6/lib/multi_json/adapters/json_common.rb:7:in load' /var/lib/gems/2.5.0/gems/multi_json-1.3.6/lib/multi_json.rb:93:in load' /var/lib/gems/2.5.0/gems/riemann-dash-0.2.14/lib/riemann/dash/browser_config/file.rb:24:in update' /var/lib/gems/2.5.0/gems/riemann-dash-0.2.14/lib/riemann/dash/browser_config.rb:23:in update' /var/lib/gems/2.5.0/gems/riemann-dash-0.2.14/lib/riemann/dash/controller/index.rb:14:in block in <class:App>' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1611:in call' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1611:in block in compile!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:975:in block (3 levels) in route!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:994:in route_eval' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:975:in block (2 levels) in route!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1015:in block in process_route' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1013:in catch' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1013:in process_route' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:973:in block in route!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:972:in each' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:972:in route!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1085:in block in dispatch!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1067:in block in invoke' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1067:in catch' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1067:in invoke' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1082:in dispatch!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:907:in block in call!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1067:in block in invoke' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1067:in catch' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1067:in invoke' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:907:in call!' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:895:in call' /var/lib/gems/2.5.0/gems/riemann-dash-0.2.14/lib/riemann/dash/rack/static.rb:9:in call' /var/lib/gems/2.5.0/gems/rack-protection-1.5.5/lib/rack/protection/xss_header.rb:18:in call' /var/lib/gems/2.5.0/gems/rack-protection-1.5.5/lib/rack/protection/path_traversal.rb:16:in call' /var/lib/gems/2.5.0/gems/rack-protection-1.5.5/lib/rack/protection/json_csrf.rb:18:in call' /var/lib/gems/2.5.0/gems/rack-protection-1.5.5/lib/rack/protection/base.rb:49:in call' /var/lib/gems/2.5.0/gems/rack-protection-1.5.5/lib/rack/protection/base.rb:49:in call' /var/lib/gems/2.5.0/gems/rack-protection-1.5.5/lib/rack/protection/frame_options.rb:31:in call' /var/lib/gems/2.5.0/gems/rack-1.6.11/lib/rack/nulllogger.rb:9:in call' /var/lib/gems/2.5.0/gems/rack-1.6.11/lib/rack/head.rb:13:in call' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/show_exceptions.rb:25:in call' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:182:in call' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:2013:in call' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1487:in block in call' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1787:in synchronize' /var/lib/gems/2.5.0/gems/sinatra-1.4.8/lib/sinatra/base.rb:1487:in call' /var/lib/gems/2.5.0/gems/thin-1.7.2/lib/thin/connection.rb:86:in block in pre_process' /var/lib/gems/2.5.0/gems/thin-1.7.2/lib/thin/connection.rb:84:in catch' /var/lib/gems/2.5.0/gems/thin-1.7.2/lib/thin/connection.rb:84:in pre_process' /var/lib/gems/2.5.0/gems/thin-1.7.2/lib/thin/connection.rb:50:in block in process'