Exception: reduce() of empty sequence with no initial value

[jwang147]

I'm trying to run HOME, however I encounter the error below:
HOME-pairwise -t CG -i /data/WGBS/04-HOME/dom1-5.txt -o ./ex1-5-cg -d 0.4 -mc 5

Preparing the DMRs from HOME.....
GOOD LUCK !
Traceback (most recent call last):
File "/data/software/miniconda3/envs/py2.7/bin/HOME-pairwise", line 4, in
import('pkg_resources').run_script('HOME==1.0.0', 'HOME-pairwise')
File "/data/software/miniconda3/envs/py2.7/lib/python2.7/site-packages/pkg_resources/init.py", line 666, in run_script
self.require(requires)[0].run_script(script_name, ns)
File "/data/software/miniconda3/envs/py2.7/lib/python2.7/site-packages/pkg_resources/init.py", line 1469, in run_script
exec(script_code, namespace, namespace)
File "/data/software/miniconda3/envs/py2.7/lib/python2.7/site-packages/HOME-1.0.0-py2.7.egg/EGG-INFO/scripts/HOME-pairwise", line 513, in

File "/data/software/miniconda3/envs/py2.7/lib/python2.7/multiprocessing/pool.py", line 572, in get
raise self._value
Exception: reduce() of empty sequence with no initial value

Do you have any suggestions for this?
Thanks!