devstack error

+lib/keystone:create_keystone_accounts:382  local admin_project
++lib/keystone:create_keystone_accounts:383  openstack project show admin -f value -c id

Failed to discover available identity versions when contacting http://10.0.2.15/identity_admin. Attempting to parse version from URL.
Could not determine a suitable URL for the plugin
+lib/keystone:create_keystone_accounts:383  admin_project=
+lib/keystone:create_keystone_accounts:1   exit_trap
+./stack.sh:exit_trap:488                  local r=1
++./stack.sh:exit_trap:489                  jobs -p