_ex_spam_filterプラグインがインストールできません。Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/^{{ <-- HERE comment\s*.*}}$/ at plugin/_ex_spam_filter/comment.pm line 58.
Compilation failed in require at plugin/_ex_spam_filter/Install.pm line 20.
BEGIN failed--compilation aborted at plugin/_ex_spam_filter/Install.pm line 20.
Compilation failed in require at (eval 14) line 1.