从15.3升级到16的时候，在网页操作更新mysql的时候，反馈了如下的报错信息

SQLSTATE[42S02]: Base table or view not found: 1146 Table 'zentao.zt_im_conferenceaction' doesn't exist<p>The sql is: ALTER TABLE `zt_im_conferenceaction` CHANGE `type` `type` ENUM('create','invite','join','leave','close') NOT NULL DEFAULT 'create'</p>