Plugin Error

Errors in plugins? Retry to Update or Configure.

SecurityError
Insecure operation - require
/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
(plugin/amazon.rb):269:in `amazon_get'
(plugin/amazon.rb):377:in `isbn_image'
(TDiary::Plugin#eval_src):539:in `block in eval_src'
/home/yoichi/geiin/www-yoichi/d/tdiary/plugin.rb:99:in `eval'
/home/yoichi/geiin/www-yoichi/d/tdiary/plugin.rb:99:in `block in eval_src'
/home/yoichi/geiin/www-yoichi/d/tdiary/core_ext.rb:106:in `block in safe'
/home/yoichi/geiin/www-yoichi/d/tdiary/core_ext.rb:107:in `safe'
/home/yoichi/geiin/www-yoichi/d/tdiary/plugin.rb:98:in `eval_src'
/home/yoichi/geiin/www-yoichi/d/tdiary/base.rb:66:in `do_eval_rhtml'
/home/yoichi/geiin/www-yoichi/d/tdiary/base.rb:30:in `eval_rhtml'
/home/yoichi/geiin/www-yoichi/d/tdiary/view.rb:240:in `eval_rhtml'
/home/yoichi/geiin/www-yoichi/d/tdiary/dispatcher/index_main.rb:43:in `run'
/home/yoichi/geiin/www-yoichi/d/tdiary/dispatcher/index_main.rb:6:in `run'
/home/yoichi/geiin/www-yoichi/d/tdiary/dispatcher.rb:21:in `dispatch_cgi'
index.rb:31:in `<main>'