我正在尝试安装soap.php，但是当mysql尝试更新时，出现以下错误：
mysql_upgrade: [ERROR] 1813: Tablespace '`mysql`.`time_zone`' exists.
mysql_upgrade failed with exit status 5
dpkg: error processing package mysql-server-5.7 (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.7; however:
Package mysql-server-5.7 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
mysql-server-5.7
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
我似乎找不到任何解决此问题的方法，删除mysql也无济于事，因为在apt-get install mysql-server之后弹出相同的错误。
你们有什么见识？预先感谢