password change failed: Insufficient access

include     /etc/openldap/schema/core.schema
include     /etc/openldap/schema/cosine.schema
include     /etc/openldap/schema/inetorgperson.schema
include     /etc/openldap/schema/nis.schema
pidfile     /run/openldap/slapd.pid
argsfile    /run/openldap/slapd.args
access to attrs=userPassword
    by self write
    by anonymous auth
    by * none
access to *
    by self write
    by * read
database    bdb
suffix      "dc=testing,dc=com"
rootdn      "cn=Manager,dc=testing,dc=com"
rootpw      {SSHA}ntsD5qrvHJtMflarQPhJzapiEEnqH2/L
directory   /var/lib/openldap/openldap-data
index   objectClass eq
index   uid             pres,eq
index   mail            pres,sub,eq
index   cn              pres,sub,eq
index   sn              pres,sub,eq
index   dc              eq

BASE   dc=testing,dc=com
URI    ldap://192.168.1.50

uid nslcd
gid nslcd
uri ldap://192.168.1.50/
base dc=testing,dc=com

auth      sufficient  pam_ldap.so
auth      required  pam_unix.so     try_first_pass nullok
auth      optional  pam_permit.so
auth      required  pam_env.so
account   sufficient  pam_ldap.so
account   required  pam_unix.so
account   optional  pam_permit.so
account   required  pam_time.so
password  sufficient  pam_ldap.so
password  required  pam_unix.so     try_first_pass nullok sha512 shadow
password  optional  pam_permit.so
session   required  pam_limits.so
session   required  pam_unix.so
session   optional  pam_ldap.so
session   optional  pam_permit.so

password    sufficient  pam_ldap.so
password    required    pam_unix.so sha512 shadow nullok