I can not send email using PHPMailer.
2019-06-16 14:21:00 Connection: opening to ssl://srv1.server.com.br:465, timeout=300, options=array()
2019-06-16 14:21:00 Connection failed. Error #2: stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed [/home/userxxx/public_html/vendor/phpmailer/phpmailer/src/SMTP.php line 321]
2019-06-16 14:21:00 Connection failed. Error #2: stream_socket_client(): Failed to enable crypto [/home/userxxx/public_html/vendor/phpmailer/phpmailer/src/SMTP.php line 321]
2019-06-16 14:21:00 Connection failed. Error #2: stream_socket_client(): unable to connect to ssl://srv1.server.com.br:465 (Unknown error) [/home/webfreel/public_html/vendor/phpmailer/phpmailer/src/SMTP.php line 321]
2019-06-16 14:21:00 SMTP ERROR: Failed to connect to server: (0)
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Erro: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting