Undefined constant "ClickHouseDB\Transport\CURLOPT_SSL_VERIFYHOST

[get-route]

Greetings! Could you tell me what's going on here? I delivered the package, the migration was successful. However, after trying to select data from the database or insert it, the following message comes - Undefined constant "ClickHouseDB\Transport\CURLOPT_SSL_VERIFYHOST"
What is the reason?

[VRn00b]

you must install php-curl extension