freebayes running error on public data

Question

[anithanagaraj93]

Hi,

I have 7 files downloaded from sra-download link (it tells those are bam files only), so started running freebayes for these files. I am getting the following error for all 7 samples, Please help me out to solve the error. These are public data.

[W::sam_read1] Parse error at line 1
terminate called after throwing an instance of 'std::runtime_error'
what():  sam_read1 return status: -2 file: SRR6768017.1
Aborted (core dumped)