gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directory

gpg: keybox '/tmp/tmphgjtb29r/pubring.gpg' created
gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directory
gpg: connecting dirmngr at '/tmp/tmphgjtb29r/S.dirmngr' failed: No such file or directory
gpg: keyserver receive failed: No dirmngr

$ sudo apt-get install dirmngr
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  dbus-user-session pinentry-gnome3 tor
The following NEW packages will be installed:
  dirmngr
0 upgraded, 1 newly installed, 0 to remove and 5 not upgraded.
Need to get 597 kB of archives.
After this operation, 1,114 kB of additional disk space will be used.
Get:1 http://deb.debian.org/debian stretch/main amd64 dirmngr amd64 2.1.18-8~deb9u4 [597 kB]
Fetched 597 kB in 0s (14.3 MB/s)
Selecting previously unselected package dirmngr.
(Reading database ... 59695 files and directories currently installed.)
Preparing to unpack .../dirmngr_2.1.18-8~deb9u4_amd64.deb ...
Unpacking dirmngr (2.1.18-8~deb9u4) ...
Processing triggers for man-db (2.7.6.1-2) ...
Setting up dirmngr (2.1.18-8~deb9u4) ...