I followed the galaxy tutorial for mapping genome sequencing data. I mapped my paired end sequencing data and filtered the resulting sam file. When I get to the step to convert sam to bam file. I ended up with a 92 byte file size and an error message that goes:
[E::sam_parse1] missing SAM header [W::sam_read1] parse error at line 1 [bam_sort_core] truncated file. Continue anyway.
Please let me know what should I do. Thanks!