notice: {MIKUTTER_DIR}/core/serialthread.rb:48:in `force_exit!': all Serial Thread Group jobs canceled.
notice: mikutter.rb:93:in `boot!': raise mainloop exception `NameError'
notice: mikutter.rb:98:in `error_handling!': catch NameError
Traceback (most recent call last):
	20: from mikutter.rb:117:in `<main>'
	19: from mikutter.rb:81:in `boot!'
	18: from /Users/ahiru/ghq/mikutter/mikutter/plugin/gtk/mainloop.rb:10:in `mainloop'
	17: from /Users/ahiru/ghq/mikutter/mikutter/plugin/gtk/mainloop.rb:10:in `catch'
	16: from /Users/ahiru/ghq/mikutter/mikutter/plugin/gtk/mainloop.rb:12:in `block in mainloop'
	15: from /Users/ahiru/ghq/mikutter/mikutter/plugin/gtk/mainloop.rb:12:in `loop'
	14: from /Users/ahiru/ghq/mikutter/mikutter/plugin/gtk/mainloop.rb:23:in `block (2 levels) in mainloop'
	13: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/delayer-1.1.2/lib/delayer.rb:38:in `method_missing'
	12: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/delayer-1.1.2/lib/delayer/extend.rb:109:in `run_once'
	11: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/delayer-1.1.2/lib/delayer/extend.rb:117:in `run_once_without_pop_reserve'
	10: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/delayer-1.1.2/lib/delayer/procedure.rb:26:in `run'
	 9: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/event.rb:43:in `block in call'
	 8: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/event.rb:157:in `call_all_listeners'
	 7: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/event.rb:157:in `catch'
	 6: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/event.rb:158:in `block in call_all_listeners'
	 5: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/event.rb:158:in `each'
	 4: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/event.rb:159:in `block (2 levels) in call_all_listeners'
	 3: from /Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/listener.rb:25:in `call'
	 2: from /Users/ahiru/ghq/mikutter/mikutter/plugin/world/world.rb:31:in `block (2 levels) in <top (required)>'
	 1: from /Users/ahiru/ghq/mikutter/mikutter/plugin/world/world.rb:76:in `register_world'
/Users/ahiru/ghq/mikutter/mikutter/vendor/bundle/ruby/2.6.0/gems/pluggaloid-1.3.1/lib/pluggaloid/plugin.rb:279:in `method_missing': undefined local variable or method `target' for #<Plugin:0x00007f82b3c1baa0> (NameError)