Plugin Error

Errors in plugins? Retry to Update or Configure.

Encoding::CompatibilityError
incompatible character encodings: UTF-8 and EUC-JP
(plugin/ja/10spamfilter.rb):9:in `spamfilter_conf_html'
(plugin/10spamfilter.rb):118:in `block (2 levels) in load_plugin'
/usr/local/tdiary/core/lib/tdiary/plugin.rb:277:in `conf_proc'
(TDiary::Plugin#eval_src):30:in `eval_src'
/usr/local/tdiary/core/lib/tdiary/plugin.rb:95:in `eval'
/usr/local/tdiary/core/lib/tdiary/plugin.rb:95:in `eval_src'
/usr/local/tdiary/core/lib/tdiary/base.rb:65:in `do_eval_rhtml'
/usr/local/tdiary/core/lib/tdiary/base.rb:29:in `eval_rhtml'
/usr/local/tdiary/core/lib/tdiary/dispatcher/update_main.rb:21:in `run'
/usr/local/tdiary/core/lib/tdiary/dispatcher/update_main.rb:5:in `run'
/usr/local/tdiary/core/lib/tdiary/dispatcher.rb:25:in `dispatch_cgi'
/usr/local/tdiary/core/update.rb:32:in `<top (required)>'
<internal:/usr/local/rbenv/versions/3.1.2/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
<internal:/usr/local/rbenv/versions/3.1.2/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
/home/toro/public_html/diary/update.cgi:3:in `<main>'