XF 2.1 Forum does not work with Memcached

[hongtrang]

My forum configures cache support according to this tutorial
Memcached

$ config ['cache'] ['enabled'] = true;
$ config ['cache'] ['provider'] = 'Memcached';
$ config ['cache'] ['config'] = [
     'server' => '127.0.0.1'
];

However, the website does not work

Please help me.!

 

[hongtrang]

I have resolved
1. Enable Remi PHP 7.3 repository
To enable Remi PHP 7.3 repository, run the command below.

yum-config-manager --enable remi-php73

2. yum install php-pecl-memcache php-pecl-memcached
3. systemctl restart httpd