It looks to me like you're updating dependencies past those that are supported in Ocata. When installing / upgrading packages, you should make sure they are bound by upper-constraints in the global requirements repo. Does horizon work from your AIO *before* you modified it? Rob On 8 Aug 2017 2:24 am, "王俊" <wangjun at yovole.com<mailto:wangjun at yovole.com>> wrote: Hi: the log is here: http://paste.openstack.org/show/617722/ . I install Ocata in centos by all in one,then I copy Ironic-UI plugin to ‘enable’,I update some lib which is Ironic-UI based on,when I restart the httpd server, the error coming. how can I fix it except reinstall the env? 保密：本函仅供收件人使用，如阁下并非抬头标明的收件人，请您即刻删除本函，勿以任何方式使用及传播，并请您能将此误发情形通知发件人，谢谢！ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20170808/da7cbb7c/attachment.html>