基本环境

操作系统：centos7
openstack组件版本：stein python版本：python3 运行正常的组件：glance、neutron、keystone 正在部署和已经部署的组件：glance、neutron、keystone、horizon 出现问题的组件：horizon

错误信息描述

Error: [$injector:modulerr] Failed to instantiate module horizon.app due to: [$injector:nomod] Module 'horizon.app' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.

请问如何解决？