Server Requirements:
- PHP 5.6.4+ (PHP 7.1+ Recommended)
- MySQL 5.1+
- mod_rewrite Apache
- MySQLi PHP Extension
- PDO PHP Extension
- cURL PHP Extension
- OpenSSL PHP Extension
- MBString PHP Extension
- iconv PHP Extension
- IMAP PHP Extension
- GD PHP Extension
- Zip PHP Extension
- allow_url_fopen enabled
In most servers, these extensions are enabled by default, but you should check with your hosting provider.