问Android cos编译出错，跪求大神如何解决？

Android studio 报错如下：

Could not determine the dependencies of task ':project_cocos:externalNativeBuildDebug'.

> Could not resolve all task dependencies for configuration ':project_cocos:debugRuntimeClasspath'.

> Could not resolve com.qcloud.cos:cos-android-lite:5.6.+.

Required by:

project :project_cocos

> No cached version listing for com.qcloud.cos:cos-android-lite:5.6.+ available for offline mode.

> No cached version listing for com.qcloud.cos:cos-android-lite:5.6.+ available for offline mode.