500 Internal Server Error

mon out of range (ArgumentError)

/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/view.rb:329:in `local'
/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/view.rb:329:in `initialize'
/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/dispatcher/index_main.rb:103:in `new'
/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/dispatcher/index_main.rb:103:in `create_tdiary'
/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/dispatcher/index_main.rb:20:in `run'
/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/dispatcher/index_main.rb:5:in `run'
/home/arton/public_html/tdiary-v5.2.4/lib/tdiary/dispatcher.rb:25:in `dispatch_cgi'
/home/arton/public_html/diary/index.rb:32:in `<main>'