only small fasta files (around 6000~7000 contigs) can work in Vir and Tox module

Dear Developer The test file you offered in PathoFact can work. but when I run my own input metagenomic sample (with 2.5M contigs), it always gives me errors. So I tried to split the sample into a couple of small files. I found only small files with < 6000-7000 contigs can work. The error seems to be from signalp (as below), but when I run my big contig sample by signal separately, it can work. So really weird. Do you have any ideas on how to solve this? because I have >600 metagenomics samples. Thanks