I have a single deb entry:
# cat /etc/apt/sources.list
deb ftp://debian.uchicago.edu/debian testing main contrib non-free
I get this glitch when I update:
#aptitude update
...
W: GPG error: ftp://debian.uchicago.edu testing InRelease: Unknown error executing gpgv
W: GPG error: ftp://debian.uchicago.edu testing InRelease: Unknown error executing gpgv
Didn't find any solutions on the net. May be there is someone here, who can help?
Thanx.