Job for mysql.service failed because the control process exited with error code. See "systemctl s...

错误提示：
Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.

执行sudo journalctl -xe查看错误原因
ubuntu audit[16391]: AVC apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/mysqld" pid=16391 comm="apparmor_parser"
ubuntu kernel: audit: type=1400 audit(1561103596.290:4348): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/mysqld" pid=16391 comm="apparmor_parser"
ubuntu mysqld[16393]: 2019-06-21T07:53:16.515489Z 0 [ERROR] /usr/sbin/mysqld: Error while setting value ''ONLY_FULL_GROUP_BY,NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,' to 'sql_mode'

错误缘由，mysqld.cnf
[mysqld]
sql_mode='ONLY_FULL_GROUP_BY,NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,

ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,PIPES_AS_CONCAT,ANSI_QUOTES'