Upgrade to sinatra v2.1.0 by sue445 · Pull Request #33 · alisnic/stackprof-webnav
sinatra v2.0.x doesn't work on ruby 3.0 /home/deploy/local/ruby/lib/ruby/gems/3.0.0/gems/mustermann-1.1.1/lib/mustermann.rb:73:in `new': Hash can't be coerced into Mustermann::Pattern (...