Plugin error from phylogeny

I received the following error when attempting to run this step from the moving pictures tutorial. Any help would be greatly appreciated.

Thanks!

qiime phylogeny fasttree \
  --i-alignment masked-aligned-rep-seqs.qza \
  --o-tree unrooted-tree.qza

Plugin error from phylogeny:
Command '['FastTree', '-nt', '/tmp/nes38/5129089/qiime2-archive-u16wlg
  r8/cf62e8ed-b13f-45f4-9a98-3ef16e79a1b8/data/aligned-dna-
  sequences.fasta']' returned non-zero exit status 1