DNS Function bug with DNSSEC (claims db.signed.jnl.db failed: file not found)

CentOS Linux release 7.4.1708 (Core)
Kernel Version: 3.10.0-693.17.1.el7.x86_64
Apache & Varnish Cache & Nginx Reverse Proxy
Apache/2.4.29
nginx/1.12.2
PHP 5.6.30
suPHP 0.7.2
MySQL 10.1.30-MariaDB
BIND 9.9.4-RedHat-9.9.4-51.el7_4.2 (Extended Support Version)
CWPpro version: 0.9.8.444

Bug
dns_list_zones >> Reload Zone or dns_list_zones >> Check Records

zone foo.bar.db.signed.jnl/IN: loading from master file /var/named/foo.bar.db.signed.jnl.db failed: file not found
zone foo.bar.db.signed.jnl/IN: not loaded due to errors.

dns_list_zones >> Edit Records

Checking DNS Zone Record for Domain: foo.bar.db.signed.jnl   
Checking Zone File: /var/named/foo.bar.db.signed.jnl.db

zone foo.bar.db.signed.jnl/IN: loading from master file /var/named/foo.bar.db.signed.jnl.db failed: file not found
zone foo.bar.db.signed.jnl/IN: not loaded due to error

followed by a 70 count repeat of

Notice: Undefined offset:3 in /usr/local/cwpsrv/htdocs/resources/admin/modules/zone_editor.php on line 0

Debugging undertaken

[root@server ~]# named-checkconf  /etc/named.conf
[root@server ~]# named-checkzone foo.bar /var/named/foo.bar.db
zone foo.bar/IN: loaded serial 2013071600
OK

Code: [Select]

[root@server ~]# service named status -l

Redirecting to /bin/systemctl status  -l named.service
● named.service - Berkeley Internet Name Domain (DNS)
   Loaded: loaded (/usr/lib/systemd/system/named.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2018-02-04 13:35:17 GMT; 41min ago
  Process: 21602 ExecStop=/bin/sh -c /usr/sbin/rndc stop > /dev/null 2>&1 || /bin/kill -TERM $MAINPID (code=exited, status=0/SUCCESS)
  Process: 30045 ExecStart=/usr/sbin/named -u named -c ${NAMEDCONF} $OPTIONS (code=exited, status=0/SUCCESS)
  Process: 30042 ExecStartPre=/bin/bash -c if [ ! "$DISABLE_ZONE_CHECKING" == "yes" ]; then /usr/sbin/named-checkconf -z "$NAMEDCONF"; else echo "Checking of zone files is disabled"; fi (code=exited, status=0/SUCCESS)
 Main PID: 30047 (named)
   CGroup: /system.slice/named.service
           └─30047 /usr/sbin/named -u named -c /etc/named.conf

Feb 04 13:35:17 server.foo.bar named[30047]: zone foo.bar/IN (signed): reconfiguring zone keys
Feb 04 13:35:17 server.foo.bar named[30047]: zone dns2.registrar-servers.com/IN: sending notifies (serial 2013071600)
Feb 04 13:35:17 server.foo.bar named[30047]: zone foo.bar/IN (signed): next key event: 04-Feb-2018 14:35:17.133
Feb 04 13:36:38 server.foo.bar named[30047]: received control channel command 'signing -list foo.bar'
Feb 04 13:37:02 server.foo.bar named[30047]: received control channel command 'loadkeys foo.bar'
Feb 04 13:37:02 server.foo.bar named[30047]: zone foo.bar/IN (signed): reconfiguring zone keys
Feb 04 13:37:02 server.foo.bar named[30047]: zone foo.bar/IN (signed): next key event: 04-Feb-2018 14:37:02.362

The debugging indicates that filed claimed missing is present.

deleted the zones and than rebuilt from scratch after which the error did not reoccur

The relief was only temporarily, probably until the zone got resigned. Now the error is back in full swing.

Would appreciate this either to be ironed out by CWP, as it seems to be a bug, or advise how to resolve.

Currently on CWPpro version: 0.9.8.447

Now on CWPpro  0.9.8.451 and have not seen this happen again