Unhandled exception: undefined method `[]' for nil:NilClass eSchol API backtrace: /var/app/current/lib/access/rss.rb:40:in `block in serveUnitRSS' /var/app/current/lib/access/rss.rb:36:in `each' /var/app/current/lib/access/rss.rb:36:in `serveUnitRSS' /var/app/current/lib/escholAPI.rb:260:in `block in ' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1674:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1674:in `block in compile!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1013:in `block (3 levels) in route!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1032:in `route_eval' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1013:in `block (2 levels) in route!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1061:in `block in process_route' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1059:in `catch' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1059:in `process_route' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1011:in `block in route!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1008:in `each' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1008:in `route!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1129:in `block in dispatch!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1101:in `block in invoke' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1101:in `catch' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1101:in `invoke' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1124:in `dispatch!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:939:in `block in call!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1101:in `block in invoke' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1101:in `catch' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1101:in `invoke' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:939:in `call!' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:929:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-2.2.3/lib/rack/deflater.rb:44:in `call' /var/app/current/lib/escholAPI.rb:55:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-protection-2.1.0/lib/rack/protection/xss_header.rb:18:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-protection-2.1.0/lib/rack/protection/path_traversal.rb:16:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-protection-2.1.0/lib/rack/protection/json_csrf.rb:26:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-protection-2.1.0/lib/rack/protection/base.rb:50:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-protection-2.1.0/lib/rack/protection/base.rb:50:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-protection-2.1.0/lib/rack/protection/frame_options.rb:31:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-2.2.3/lib/rack/null_logger.rb:11:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/rack-2.2.3/lib/rack/head.rb:12:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:216:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1991:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1542:in `block in call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1769:in `synchronize' /var/app/current/vendor/bundle/ruby/3.0.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1542:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/puma-4.3.3/lib/puma/configuration.rb:228:in `call' /var/app/current/vendor/bundle/ruby/3.0.0/gems/puma-4.3.3/lib/puma/server.rb:682:in `handle_request' /var/app/current/vendor/bundle/ruby/3.0.0/gems/puma-4.3.3/lib/puma/server.rb:472:in `process_client' /var/app/current/vendor/bundle/ruby/3.0.0/gems/puma-4.3.3/lib/puma/server.rb:328:in `block in run' /var/app/current/vendor/bundle/ruby/3.0.0/gems/puma-4.3.3/lib/puma/thread_pool.rb:134:in `block in spawn_thread'