Open Stack

Hi all,
     This is the first time I try to stack with devstack. After 
executing the script:
                                   ./stack.sh
the process of stacking is automatic. But, when creating keystone 
account, the script abort with the following message:

2016-06-22 17:11:48.286 | + ./stack.sh:main:1019 :   cat
2016-06-22 17:11:48.291 | + ./stack.sh:main:1034 : is_service_enabled 
tls-proxy
2016-06-22 17:11:48.307 | + functions-common:is_service_enabled:2078 :   
return 1
2016-06-22 17:11:48.310 | + ./stack.sh:main:1038 :   source 
/opt/devstack/userrc_early
2016-06-22 17:11:48.312 | ++ userrc_early:source:4                    
:   export OS_IDENTITY_API_VERSION=3
2016-06-22 17:11:48.315 | ++ userrc_early:source:4                    : 
OS_IDENTITY_API_VERSION=3
2016-06-22 17:11:48.318 | ++ userrc_early:source:5                    
:   export OS_AUTH_URL=http://10.0.2.32/identity_v2_admin
2016-06-22 17:11:48.322 | ++ userrc_early:source:5                    : 
OS_AUTH_URL=http://10.0.2.32/identity_v2_admin
2016-06-22 17:11:48.324 | ++ userrc_early:source:6                    
:   export OS_USERNAME=admin
2016-06-22 17:11:48.326 | ++ userrc_early:source:6                    
:   OS_USERNAME=admin
2016-06-22 17:11:48.328 | ++ userrc_early:source:7                    
:   export OS_USER_DOMAIN_ID=default
2016-06-22 17:11:48.330 | ++ userrc_early:source:7                    : 
OS_USER_DOMAIN_ID=default
2016-06-22 17:11:48.332 | ++ userrc_early:source:8                    
:   export OS_PASSWORD=devstack
2016-06-22 17:11:48.334 | ++ userrc_early:source:8                    
:   OS_PASSWORD=devstack
2016-06-22 17:11:48.336 | ++ userrc_early:source:9                    
:   export OS_PROJECT_NAME=admin
2016-06-22 17:11:48.338 | ++ userrc_early:source:9                    
:   OS_PROJECT_NAME=admin
2016-06-22 17:11:48.340 | ++ userrc_early:source:10                   
:   export OS_PROJECT_DOMAIN_ID=default
2016-06-22 17:11:48.341 | ++ userrc_early:source:10                   : 
OS_PROJECT_DOMAIN_ID=default
2016-06-22 17:11:48.343 | ++ userrc_early:source:11                   
:   export OS_REGION_NAME=RegionOne
2016-06-22 17:11:48.345 | ++ userrc_early:source:11                   : 
OS_REGION_NAME=RegionOne
2016-06-22 17:11:48.347 | + ./stack.sh:main:1040 : create_keystone_accounts
2016-06-22 17:11:48.349 | + lib/keystone:create_keystone_accounts:382 
:   local admin_project
2016-06-22 17:11:48.354 | ++ lib/keystone:create_keystone_accounts:383 
:   openstack project show admin -f value -c id
2016-06-22 17:13:58.283 | Discovering versions from the identity service 
failed when creating the password plugin. Attempting to determine 
version from URL.
2016-06-22 17:13:58.284 | Could not determine a suitable URL for the plugin
2016-06-22 17:13:58.334 | + lib/keystone:create_keystone_accounts:383 
:   admin_project=
2016-06-22 17:13:58.337 | + lib/keystone:create_keystone_accounts:1 :   
exit_trap
2016-06-22 17:13:58.342 | + ./stack.sh:exit_trap:480 :   local r=1
2016-06-22 17:13:58.345 | ++ ./stack.sh:exit_trap:481                 
:   jobs -p
2016-06-22 17:13:58.348 | + ./stack.sh:exit_trap:481 :   jobs=
2016-06-22 17:13:58.350 | + ./stack.sh:exit_trap:484 :   [[ -n '' ]]
2016-06-22 17:13:58.355 | + ./stack.sh:exit_trap:490 : kill_spinner
2016-06-22 17:13:58.359 | + ./stack.sh:kill_spinner:376 :   '[' '!' -z 
'' ']'
2016-06-22 17:13:58.361 | + ./stack.sh:exit_trap:492 :   [[ 1 -ne 0 ]]
2016-06-22 17:13:58.362 | + ./stack.sh:exit_trap:493 :   echo 'Error on 
exit'
2016-06-22 17:13:58.362 | Error on exit
2016-06-22 17:13:58.364 | + ./stack.sh:exit_trap:494 : generate-subunit 
1466615141 497 fail
2016-06-22 17:13:58.788 | + ./stack.sh:exit_trap:495 :   [[ -z 
/opt/stack/logs ]]
2016-06-22 17:13:58.790 | + ./stack.sh:exit_trap:498 : 
/opt/devstack/tools/worlddump.py -d /opt/stack/logs
2016-06-22 17:13:59.385 | + ./stack.sh:exit_trap:504 :   exit 1

Is there any suggestion about how to deal with the problem? Thanks.