在安装php7.0之后，这个问题才刚刚开始发生，我不确定。每当我运行sudo service apache2 reload时都会出现错误
Job for apache2.service failed because the control process exited with error code. See "systemctl status apache2.service" and "journalctl -xe" for details.
当我运行时，我运行systemctl我得到
The apache2 configtest failed. Not doing anything.
Output of config test was:
AH00526: Syntax error on line 14 of /etc/apache2/sites-enabled/normal.conf:
Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included in the server configurat
Action 'configtest' failed.
The Apache error log may have more information.
在安装php7之前一切正常。我将如何解决这个问题？