1.4.5版本的七牛插件没能生效

那就配置错误！

检查下来没什么发现，开了debug

错误：（8）ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush
来源：http://oncovision.cn/wp-admin/admin.php?page=wpjam-topic-messages
回调：shutdown_action_hook, do_action('shutdown'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, qqworld_speed4china->buffer_end, ob_end_flush, wpjam_error_handler
文件：/var/www/oncovision.cn/wp-content/plugins/qqworld-speed-4-china/qqworld-speed4china.php
行数：83
地址：http://oncovision.cn/
时间：2017-03-14 09:24:08

错误：（8）ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush
来源：http://oncovision.cn/wp-admin/admin.php?page=wpjam-topic-messages
回调：shutdown_action_hook, do_action('shutdown'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, qqworld_speed4china->buffer_end, ob_end_flush, wpjam_error_handler
文件：/var/www/oncovision.cn/wp-content/plugins/qqworld-speed-4-china/qqworld-speed4china.php
行数：83
地址：http://oncovision.cn/
时间：2017-03-14 09:25:30

错误：（8）ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush
来源：http://oncovision.cn/
回调：shutdown_action_hook, do_action('shutdown'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, qqworld_speed4china->buffer_end, ob_end_flush, wpjam_error_handler
文件：/var/www/oncovision.cn/wp-content/plugins/qqworld-speed-4-china/qqworld-speed4china.php
行数：83
地址：http://oncovision.cn/
时间：2017-03-14 09:25:35

然后把那个冲突的插件停用了，还是一样的404

好吧，我傻了，漏掉了一个设置步骤。
需要在七牛存储空间的 镜像存储设置里把源站填上。。。