我正在尝试将我的PHP（CodeIgniter）应用程序连接到MongoDB Atlas。但是连接失败，原因是TLS握手失败：错误：1416F086：SSL例程：tls_process_server_certificate：证书验证失败。
我正在使用 -PHP 7.4.7（Codeigniter框架） -MongoDB扩展版本1.7.4 -Ubuntu 18.4 -Xampp
完整的错误日志是
Type: MongoDB\Driver\Exception\ConnectionTimeoutException
Message: No suitable servers found: `serverSelectionTimeoutMS` expired: [TLS handshake failed: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed calling ismaster on 'bohoz-shard-00-02.817p7.azure.mongodb.net:27017'] [TLS handshake failed: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed calling ismaster on 'bohoz-shard-00-01.817p7.azure.mongodb.net:27017'] [TLS handshake failed: error:1416F086:SSL routines:tls_process_server_certificate:
Filename: /home/rumaiz/MyWork/AAYUS/php_works/mvm-admin-portal/vendor/mongodb/mongodb/src/functions.php
Line Number: 431```