EXCEPTION: Bio::Root::Exception ------------- MSG: Failed validation of sequence '1'. Invalid characters were: ''''''''''

[Psedhai]

Hi, how to solve this issue?

Thank you in advance.

------------ EXCEPTION: Bio::Root::Exception -------------
MSG: Failed validation of sequence '1'. Invalid characters were: ''''''''''
STACK: Error::throw
STACK: Bio::Root::Root::throw /usr/share/perl5/Bio/Root/Root.pm:449
STACK: Bio::PrimarySeq::validate_seq /usr/share/perl5/Bio/PrimarySeq.pm:338
STACK: Bio::PrimarySeq::_set_seq_by_ref /usr/share/perl5/Bio/PrimarySeq.pm:287
STACK: Bio::PrimarySeq::seq /usr/share/perl5/Bio/PrimarySeq.pm:272
STACK: Bio::Seq::seq /usr/share/perl5/Bio/Seq.pm:572
STACK: Bio::PrimarySeqI::translate /usr/share/perl5/Bio/PrimarySeqI.pm:709
STACK: Bio::Roary::ExtractProteomeFromGFF::_fastatranslate /usr/share/perl5/Bio/Roary/ExtractProteomeFromGFF.pm:156
STACK: Bio::Roary::ExtractProteomeFromGFF::_convert_nucleotide_to_protein /usr/share/perl5/Bio/Roary/ExtractProteomeFromGFF.pm:164
STACK: Bio::Roary::ExtractProteomeFromGFF::fasta_file /usr/share/perl5/Bio/Roary/ExtractProteomeFromGFF.pm:29
STACK: Bio::Roary::CommandLine::ExtractProteomeFromGff::run /usr/share/perl5/Bio/Roary/CommandLine/ExtractProteomeFromGff.pm:90
STACK: /usr/bin/extract_proteome_from_gff:14