Software error:Can't locate Math/Random/ISAAC.pm in @INC (@INC contains: . lib/x86_64-linux-thread-multi lib /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at Bugzilla/RNG.pm line 17.BEGIN failed--compilation aborted at Bugzilla/RNG.pm line 17.Compilation failed in require at Bugzilla/Util.pm line 30.BEGIN failed--compilation aborted at Bugzilla/Util.pm line 30.Compilation failed in require at Bugzilla/Mailer.pm line 20.BEGIN failed--compilation aborted at Bugzilla/Mailer.pm line 20.Compilation failed in require at Bugzilla/Auth.pm line 22.BEGIN failed--compilation aborted at Bugzilla/Auth.pm line 22.Compilation failed in require at Bugzilla.pm line 23.BEGIN failed--compilation aborted at Bugzilla.pm line 23.Compilation failed in require at /var/www/html/bugzilla/index.cgi line 15.BEGIN failed--compilation aborted at /var/www/html/bugzilla/index.cgi line 15.
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求大神指导 哪里出了问题