i have this error,I do not really understand programming language

1.0> Checking for latest version
1.1> Connecting to server: codoforum.com ...
####: Initiating cURL request

Fatal error: Uncaught exception 'ErrorException' with message 'cURL library is not loaded' in /opt/www/forum/admin/modules/system/Curl.php:45 Stack trace: #0 /opt/www/forum/admin/modules/system/upgrade.php(198): Curl\Curl->__construct() #1 /opt/www/forum/admin/modules/system/upgrade.php(352): upgrader::check_latest() #2 /opt/www/forum/admin/modules/system/upgrade.php(378): upgrader::run() #3 /opt/www/forum/admin/Lib.php(29): require('/opt/www/forum/...') #4 /opt/www/forum/admin/Lib.php(60): codoForumAdmin::show_layout('system/upgrade') #5 /opt/www/forum/admin/index.php(56): codoForumAdmin::run() #6 {main} thrown in /opt/www/forum/admin/modules/system/Curl.php on line 45

You need curl library/extension for PHP.

Ask your webserver to enable/install curl.