package:bind9:1:9.11.4+dfsg-3ubuntu5.4
Setting up bind9 (1:9.11.4+dfsg-3ubuntu5.4) ...
bind9-pkcs11.service is a disabled or a static unit not running, not starting it.
bind9-resolvconf.service is a disabled or a static unit not running, not starting it.
Job for bind9.service failed because the control process exited with error code.
See "systemctl status bind9.service" and "journalctl -xe" for details.
invoke-rc.d: initscript bind9, action "restart" failed.
● bind9.service - BIND Domain Name Server
   Loaded: loaded (]8;;file://ThinkPad/lib/systemd/system/bind9.service/lib/systemd/system/bind9.service]8;;; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2019-06-22 05:07:56 PDT; 8ms ago
     Docs: ]8;;man:named(8)man:named(8)]8;;
  Process: 22758 ExecStart=/usr/sbin/named $OPTIONS (code=exited, status=1/FAILURE)

Jun 22 05:07:56 ThinkPad named[22773]: generating session key for dynamic DNS
Jun 22 05:07:56 ThinkPad named[22773]: sizing zone task pool based on 5 zones
Jun 22 05:07:56 ThinkPad named[22773]: none:104: 'max-cache-size 90%' - setting to 5179MB (out of 5754MB)
Jun 22 05:07:56 ThinkPad named[22773]: obtaining root key for view _default from '/etc/bind/bind.keys'
Jun 22 05:07:56 ThinkPad named[22773]: working directory '/var/cache/bind' is not writable
Jun 22 05:07:56 ThinkPad named[22773]: loading configuration: permission denied
Jun 22 05:07:56 ThinkPad named[22773]: exiting (due to fatal error)
Jun 22 05:07:56 ThinkPad systemd[1]: bind9.service: Control process exited, code=exited status=1
Jun 22 05:07:56 ThinkPad systemd[1]: bind9.service: Failed with result 'exit-code'.
Jun 22 05:07:56 ThinkPad systemd[1]: Failed to start BIND Domain Name Server.
dpkg: error processing package bind9 (--configure):
 installed bind9 package post-installation script subprocess returned error exit status 1