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Hello all, does anyone have an suggestion on this error?

[root at osc1 ~(keystone_admin)]# cinder quota-show demo
ERROR: The server has either erred or is incapable of performing the requested operation. (HTTP 500) (Request-ID: req-4a681bb0-a0b5-4325-8c12-3f48659a42f1)


[root at osc1 ~(keystone_admin)]# cinder list
+--------------------------------------+-----------+------------------+------+------+-------------+----------+-------------+-------------+
|                  ID                  |   Status  | Migration Status | Name | Size | Volume Type | Bootable | Multiattach | Attached to |
+--------------------------------------+-----------+------------------+------+------+-------------+----------+-------------+-------------+
| 5a5558a6-8a7b-46d8-8db6-2cdfee46fef0 | available |        -         |  -   |  1   |      -      |  false   |    False    |             |
| a3204f4f-142d-4a3e-9007-9fa149302f08 | available |        -         |  -   |  1   |      -      |  false   |    False    |             |
| aac3b72a-e9ca-4e4a-94ce-2b03532eb516 | available |        -         | remo |  1   |      -      |  false   |    False    |             |
| e8aa977c-3802-45cc-b700-0b7778840318 | available |        -         | test |  1   |      -      |  false   |    False    |             |
+--------------------------------------+-----------+------------------+------+------+-------------+----------+-------------+——————+


I can attached and create volumes no problems at all. 

in the cinder-api logs I get just a warning which is ok. 

WARNING keystonemiddleware.auth_token [-] Use of the auth_admin_prefix, auth_host, auth_port, auth_protocol, identity_uri, admin_token, admin_user, adm
in_password, and admin_tenant_name configuration options is deprecated in favor of auth_plugin and related options and may be removed in a future release.
2015-12-18 13:16:11.639 3403 WARNING oslo_log.versionutils [-] Deprecated: RequestBodySizeLimiter() is deprecated as of Kilo in favor of oslo_middleware.RequestBodySizeLimiter and
may be removed in Mitaka.


Thanks, 
Remo