Plugin error from dada2:R and Traceback

Hi @colinbrislawn ,
I have some problem when running the phylogeny plugin. Please have a look the error log:

nseq = 2659
nlen =
distance = sixtuples
iterate = 0
cycle = 2
/home/yuli/lixs/software/prank/bin/mafft: line 1195: /home/yuli/lixs/software/pr
ank/bin/lib/replaceu: No such file or directory
ED1lfnSh/pre: No such file or directory
Traceback (most recent call last):
File “/home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/site-packages/q2cl
i/commands.py”, line 327, in call
results = action(**arguments)
File “</home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/site-packages/dec
orator.py:decorator-gen-477>”, line 2, in mafft
File “/home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/site-packages/qiim
e2/sdk/action.py”, line 240, in bound_callable
output_types, provenance)
File “/home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/site-packages/qiim
e2/sdk/action.py”, line 383, in callable_executor
output_views = self._callable(**view_args)
File “/home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/site-packages/q2_a
lignment/_mafft.py”, line 85, in mafft
run_command(cmd, aligned_fp)
File “/home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/site-packages/q2_alignment/_mafft.py”, line 27, in run_command
subprocess.run(cmd, stdout=output_f, check=True)
File “/home/yuli/anaconda3/envs/qiime2-2019.7/lib/python3.6/subprocess.py”, line 418, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command ‘[‘mafft’, ‘–preservecase’, ‘–inputorder’, ‘–thread’, ‘1’, ‘/home/yuli/TMP_Dir/qiime2-archive-fmhs7exr/e1aa4400-1266
-4faa-8ec0-13f5708dc2db/data/dna-sequences.fasta’]’ returned non-zero exit status 1.