[LDAP tool] authentication fails if use -d option to search only users

if running run.sh to search only users using -d option in ldap tool then Authentication fails due ArrayIndexOutofbound exception
ERROR: LDAP Authentication Failed: java.lang.ArrayIndexOutOfBoundsException: -1
ERROR: Failed to authenticate User0001
INFO: First 20 Users and associated groups are:
Username: testuser, Groups: []