pkg: sqlite error while executing sqlite open in file pkgdb.c:1126: unable to open database file

gistfile1.txt

[root@host /tmp]# portmaster -Kvw glib-2.50.2_5,1

[...snip many lines of compile and install output...]

====> Compressing man pages (compress-man)

===>>> Creating a backup package for old version glib-2.50.2_5,1
Creating package for glib-2.50.2_5,1
Updating database digests format: 100%
Checking integrity... done (0 conflicting)
Deinstallation has been requested for the following 1 packages (of 0 packages in the universe):

Installed packages to be REMOVED:
        glib-2.50.2_5,1

Number of packages to be removed: 1

The operation will free 19 MiB.
[1/1] Deinstalling glib-2.50.2_5,1...
[1/1] Deleting files for glib-2.50.2_5,1: 100%

===>>> Starting check for runtime dependencies
===>>> Gathering dependency list for devel/glib20 from ports
===>>> Starting dependency check
===>>> Checking dependency: converters/libiconv
===>>> Checking dependency: devel/gettext-runtime
===>>> Checking dependency: devel/libffi
===>>> Checking dependency: devel/pcre
===>>> Checking dependency: lang/perl5.24
===>>> Checking dependency: lang/python27
===>>> Dependency check complete for devel/glib20

===>  Installing for glib-2.50.2_6,1
===>  Checking if glib already installed
===>   Registering installation for glib-2.50.2_6,1 as automatic
Installing glib-2.50.2_6,1...
No schema files found: doing nothing.
===> SECURITY REPORT:
      This port has installed the following files which may act as network
      servers and may therefore pose a remote security risk to the system.
/usr/local/lib/libgio-2.0.so.0.5000.2

      If there are vulnerabilities in these programs there may be a security
      risk to the system. FreeBSD makes no guarantee about the security of
      ports included in the Ports Collection. Please type 'make deinstall'
      to deinstall the port if this is a concern.

      For more information, and contact details about the security
      status of this software, see the following webpage:
https://www.gtk.org/

===>>> Keeping current distfile: gnome2/glib-2.50.2.tar.xz
===>>> Distfile cleaning complete

pkg: sqlite error while executing sqlite open in file pkgdb.c:1126: unable to open database file
===>>> Done displaying pkg-message files

===>>> The following actions were performed:
        Upgrade of python27-2.7.13_7 to python27-2.7.14
        Upgrade of glib-2.50.2_5,1 to glib-2.50.2_6,1

[root@host /tmp]# pkg info | grep -E "(glib|python27)"
glib-2.50.2_6,1                Some useful routines of C programming (current stable version)
python27-2.7.14                Interpreted object-oriented programming language
[root@host /tmp]#