Plugin Error

Errors in plugins? Retry to Update or Configure.

Encoding::ConverterNotFoundError
code converter not found (UTF-8 to euc)
(plugin/a.rb):98:in `encode'
(plugin/a.rb):98:in `a_convert_charset'
(plugin/a.rb):140:in `a'
(TDiary::Plugin#eval_src):797:in `block in eval_src'
/home/sakai/www/tdiary/lib/tdiary/plugin.rb:107:in `eval'
/home/sakai/www/tdiary/lib/tdiary/plugin.rb:107:in `block in eval_src'
/home/sakai/www/tdiary/lib/tdiary/core_ext.rb:121:in `block in safe'
/home/sakai/www/tdiary/lib/tdiary/core_ext.rb:123:in `call'
/home/sakai/www/tdiary/lib/tdiary/core_ext.rb:123:in `safe'
/home/sakai/www/tdiary/lib/tdiary/plugin.rb:106:in `eval_src'
/home/sakai/www/tdiary/lib/tdiary/base.rb:66:in `do_eval_rhtml'
/home/sakai/www/tdiary/lib/tdiary/base.rb:30:in `eval_rhtml'
/home/sakai/www/tdiary/lib/tdiary/view.rb:247:in `eval_rhtml'
/home/sakai/www/tdiary/lib/tdiary/dispatcher/index_main.rb:43:in `run'
/home/sakai/www/tdiary/lib/tdiary/dispatcher/index_main.rb:6:in `run'
/home/sakai/www/tdiary/lib/tdiary/dispatcher.rb:26:in `dispatch_cgi'
/home/sakai/www/tdiary/index.rb:32:in `<top (required)>'
/var/www/msakai.jp/d/index.rb:2:in `load'
/var/www/msakai.jp/d/index.rb:2:in `<main>'