You must specify the prefix path to the catalog.
sstacks 1.35
sstacks -b batch_id -c catalog_file -s sample_file [-s sample_file_2 ...] [-o path] [-p num_threads] [-g] [-x] [-v] [-h]
  p: enable parallel execution with num_threads threads.
  b: MySQL ID of this batch.
  c: TSV file from which to load the catalog loci.
  s: filename prefix from which to load sample loci.
  o: output path to write results.
  g: base matching on genomic location, not sequence identity.
  x: don't verify haplotype of matching locus.
  v: print program version.
  h: display this help messsage.