Hi, all!

Please help me, to update my Metasploit Framework,

my sources list:

Code:
# deb cdrom:[Debian GNU/Linux 2017.1 _Kali-rolling_ - Official Snapshot amd64 LIVE/INSTALL Binary 20170416-02:08]/ $

#deb cdrom:[Debian GNU/Linux 2017.1 _Kali-rolling_ - Official Snapshot amd64 LIVE/INSTALL Binary 20170416-02:08]/ k$

deb http://http.kali.org/kali kali-rolling main non-free contrib
# deb-src http://http.kali.org/kali kali-rolling main non-free contrib
Version OS:

Code:
root@kaliVM:~# lsb_release -a
No LSB modules are available.
Distributor ID:	Kali
Description:	Kali GNU/Linux Rolling
Release:	kali-rolling
Codename:	kali-rolling
root@kaliVM:~# uname -a
Linux kaliVM 4.9.0-kali4-amd64 #1 SMP Debian 4.9.25-1kali1 (2017-05-04) x86_64 GNU/Linux
root@kaliVM:~#
Error i encounter:

Code:
root@kaliVM:~# msfupdate [*][*] Attempting to update the Metasploit Framework...[*]
[*] Checking for updates via the APT repository[*] Note: expect weekly(ish) updates using this method
/usr/bin/msfupdate:275:in `update_apt!': undefined method `blank?' for nil:NilClass (NoMethodError)
	from /usr/bin/msfupdate:140:in `block in run!'
	from /usr/bin/msfupdate:134:in `chdir'
	from /usr/bin/msfupdate:134:in `run!'
	from /usr/bin/msfupdate:326:in `<main>'
Please help me in resolving the issue.