ValueError

[clolalan7]

Hi, when I try to pre-compute the restriction sites on Hg38, I get the following error:

Traceback (most recent call last):
File "/nfs/turbo/epicore-active/Claudia/cuRRBS-1.0.2/src/pre_compute_digestions.py", line 173, in
batch = RestrictionBatch([enzyme])
File "/home/clalance/miniconda3/envs/currbs/lib/python2.7/site-packages/Bio/Restriction/Restriction.py", line 2076, in init
first = [self.format(x) for x in first]
File "/home/clalance/miniconda3/envs/currbs/lib/python2.7/site-packages/Bio/Restriction/Restriction.py", line 2233, in format
raise ValueError("%s is not a RestrictionType" % y.class)
ValueError: <type 'str'> is not a RestrictionType

any idea? thanks