error:biobakery_workflows_databases --install 16s_usearch

[LiZhihua1982]

(biobakery_workflows) lizhihua@lizhihua-S2600CP:$ biobakery_workflows --versionbiobakery_workflows v3.0.0-alpha.4
(biobakery_workflows) lizhihua@lizhihua-S2600CP:$ kneaddata --version
kneaddata v0.7.4
(biobakery_workflows) lizhihua@lizhihua-S2600CP:~$ biobakery_workflows_databases --install 16s_usearch
Downloading green genes database files
Downloading ftp://greengenes.microbio.me/greengenes_release/gg_13_8_otus/rep_set/97_otus.fasta
Downloading file of size: 136.58 MB

136.59 MB 100.00 % 3.75 MB/sec 0 min -0 sec

Downloading ftp://greengenes.microbio.me/greengenes_release/gg_13_8_otus/taxonomy/97_otu_taxonomy.txt
Downloading file of size: 9.61 MB

9.61 MB 100.01 % 1.20 MB/sec 0 min -0 sec

Traceback (most recent call last):
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/bin/biobakery_workflows_databases", line 11, in
sys.exit(main())
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/lib/python3.7/site-packages/biobakery_workflows/biobakery_workflows_databases.py", line 244, in main
run_command(["download_picrust_files.py"])
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/lib/python3.7/site-packages/biobakery_workflows/biobakery_workflows_databases.py", line 73, in run_command
id=subprocess.check_call(command, shell=shell)
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/lib/python3.7/subprocess.py", line 358, in check_call
retcode = call(*popenargs, **kwargs)
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/lib/python3.7/subprocess.py", line 339, in call
with Popen(*popenargs, **kwargs) as p:
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/lib/python3.7/subprocess.py", line 800, in init
restore_signals, start_new_session)
File "/home/lizhihua/miniconda3/envs/biobakery_workflows/lib/python3.7/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'download_picrust_files.py': 'download_picrust_files.py'