CGI エラー

エラーメッセージ：
Can't use 'defined(%hash)' (Maybe you should just omit the defined()?) at ./lib/jcode.pl line 543.

CGI エラー

エラーメッセージ：
Can't use 'defined(%hash)' (Maybe you should just omit the defined()?) at ./lib/jcode.pl line 543. Compilation failed in require at mail.cgi line 25.