Email test error

Replies: 0

Hello,

There was a problem while sending a test email. Related debugging output is shown below:

Versions:
WordPress: 4.9.4
WordPress MS: No
PHP: 5.6.33-1~dotdeb+zts+7.1
WP Mail SMTP: 1.2.5

Params:
Mailer: gmail
Constants: No
Client ID/Secret: Yes
Auth Code: Yes
Access Token: Yes

Server:
OpenSSL: Yes
PHP.allow_url_fopen: Yes
PHP.stream_socket_client(): Yes
PHP.fsockopen(): Yes
PHP.curl_version(): Yes

What could be wrong? I synced WP with my Gmail.