如何使apache中的重写模块正常工作?

apache的重写模块在vps服务器LAMP上不起作用(ubuntu 18.04)

我所做的:

<VirtualHost *:80>
  ServerAdmin admin@example.com
  ServerName example.com
  ServerAlias www.example.com
  DocumentRoot /var/www/example.com/html
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined   
</VirtualHost>

2) 启用当前虚拟主机:

sudo a2ensite example.com.conf

3) 禁用默认设置:

sudo a2dissite 000-default.conf

4) 激活Mod_重写

sudo a2enmod rewrite

5) 在/etc/apache2/apache2.conf中添加配置

<Directory /var/www/example.com/html/>
    Options Indexes FollowSymLinks MultiViews
    AllowOverride All
    Order allow,deny
    allow from all
</Directory>

sudo systemctl restart apache2

主页可以正常工作,但如果我单击一个链接,例如.com/product-page-1,它会显示:

The requested URL /product-page-1 was not found on this server.

我做错了什么???

使现代化

.htaccess文件

<IfModule mod_rewrite.c>
<IfModule mod_negotiation.c>
    Options -MultiViews -Indexes
</IfModule>

RewriteEngine On

# Handle Authorization Header
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

# Redirect Trailing Slashes If Not A Folder...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} (.+)/$
RewriteRule ^ %1 [L,R=301]

# Handle Front Controller...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [L]

# some redirects
Redirect 301 /create-account.html /register
...

</IfModule>

更新2

我在htaccess中有25-30个301重定向,如果我不删除它们,服务器就会失败

The server encountered an internal error or misconfiguration and was unable to complete your request.

如果我查看appache2的错误日志,我会看到:

/var/www/example.com/html/.htaccess: Invalid command 'Register', perhaps misspelled or defined by a module not included in the server configuration

什么模块需要apache 301重定向才能工作???