bp upstream bp downstream

Can't locate Bio/SeqIO.pm in @INC (you may need to install the Bio::SeqIO module) (@INC contains: /opt/local/lib/perl5/site_perl/5.24/darwin-thread-multi-2level /opt/local/lib/perl5/site_perl/5.24 /opt/local/lib/perl5/vendor_perl/5.24/darwin-thread-multi-2level /opt/local/lib/perl5/vendor_perl/5.24 /opt/local/lib/perl5/5.24/darwin-thread-multi-2level /opt/local/lib/perl5/5.24 .) at /Library/WebServer/Documents/ecoliwiki/tools/subseq.pl line 4.
BEGIN failed--compilation aborted at /Library/WebServer/Documents/ecoliwiki/tools/subseq.pl line 4.