Bind server unresponsive on Ubuntu

I have installed ispconfig 3.1 and it is up and running , I made a tiny mistake in making a dns server and instead of " F " I typed " T " in my domain name , and realized that , once I deleted the dns zone from Ispconfig , the zone is not created it named.conf.local , instead of a file pri.mydomain.ltd a new file with a same name but different ending " pri.mydomain.ltd.err" is created , every new dns zone works with my bind server and the result of dig @127.0.0.1 newdomain.ltd shows my ns perfectly explicitly , yet I noticed for every dns zone that is deleted , the file with extension .err is made and that I am not able to nslookup it locally , this is my result for dig for a new zone :

Code:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @127.0.0.1 testnumber2.dd
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29727
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;testnumber2.dd.                        IN      A

;; ANSWER SECTION:
testnumber2.dd.         3600    IN      A       94.177.255.169

;; AUTHORITY SECTION:
testnumber2.dd.         3600    IN      NS      ns77.test.dd.
testnumber2.dd.         3600    IN      NS      ns3.test.dd.

but the same domain when is deleted and created once again becomes :

Code:

root@Shahab:/etc/bind# dig @127.0.0.1 testnumber2.dd

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @127.0.0.1 testnumber2.dd
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 54294
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;hfp.co.ir.                     IN      A

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Feb 18 22:15:41 CET 2017
;; MSG SIZE  rcvd: 38

which the ns are missing , I thought I should be smart and add the zone manually in my named.conf.local and I did

Code:

zone "testnumber2.dd" {
        type master;
        allow-transfer {none;};
        file "/etc/bind/pri.testnumber2.dd";
};
zone "hfp.co.ir" {
        type master;
        allow-transfer {none;};
        file "/etc/bind/pri.hfp.co.ir";
};

and restarted the service of bind , same result , I even renamed the file a few times to see if it reads it from .err or not and I got to the bottom of it that in fact it doesn't matter.

please grace me with your wisdom