net/unifi: broken dependency (devel/py-cheetah)

Hi!

Just a quick e-mail, since I'm totally new to OpenBSD's ports and my focus
is mainly on pkgsrc...

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apu# make install
===> net/unifi/5.6
===> unifi-5.6.42p21 depends on: mongodb-<3.7 - not found
===> Verifying install for mongodb-<3.7 in databases/mongodb/36
===> Checking files for mongodb-3.6.23p5
`/usr/ports/distfiles/mongodb-src-r3.6.23.tar.gz' is up to date.
>> (SHA256) mongodb-src-r3.6.23.tar.gz: OK
===> mongodb-3.6.23p5 depends on: py3-cheetah-* - not found
===> Verifying install for py3-cheetah-* in devel/py-cheetah
===> Checking files for py3-cheetah-3.2.6p4
`/usr/ports/distfiles/Cheetah3-3.2.6.tar.gz' is up to date.
>> (SHA256) Cheetah3-3.2.6.tar.gz: OK
>> Broken dependency: lang/python/3 non existent (DEPENDS was lang/python/3) in devel/py-cheetah,python3
*** Error 1 in /usr/ports/devel/py-cheetah (/usr/ports/infrastructure/mk/bsd.port.mk:2386 '/usr/ports/pobj/py-cheetah-3.2.6-python3/.dep-lang-python-3')
*** Error 2 in /usr/ports/devel/py-cheetah (/usr/ports/infrastructure/mk/bsd.port.mk:2796 '/usr/ports/pobj/py-cheetah-3.2.6-python3/.extract_done')
*** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheerr*** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-chee.2*** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheeor*** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheetah *** Error 2 in /usr/ports/devel/py-cheeng

apu# uname -a
OpenBSD apu.home.arpa 7.6 GENERIC.MP#338 amd64

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Ports tree was updated after sysupgrade'ing a couple of weeks ago. Happy
about helping hands / advices...

Best wishes.