S3Repo Plugin issue

[trekkim]

Hi I have issue with munkiimport. Munki installed latest 4.1

#munkiimport /tmp/KY-PrinterDrivers.pkg
s3Repo Plugin platform is 'macos'

Traceback (most recent call last):
File "/usr/local/munki/munkiimport", line 607, in
main()
File "/usr/local/munki/munkiimport", line 387, in main
matchingpkginfo = munkiimportlib.find_matching_pkginfo(repo, pkginfo)
File "/usr/local/munki/munkilib/admin/munkiimportlib.py", line 234, in find_matching_pkginfo
catdb = make_catalog_db(repo)
File "/usr/local/munki/munkilib/admin/munkiimportlib.py", line 142, in make_catalog_db
catalogitems = FoundationPlist.readPlistFromString(plist)
File "/usr/local/munki/munkilib/FoundationPlist.py", line 92, in readPlistFromString
plistData = NSData.dataWithBytes_length_(data, len(data))
TypeError: Expecting byte-buffer, got str

can someone help thx