cUrl Error 7 – Not being able to connect the bot

Hello! I’m trying to connect a test bot but the following error appears:

WP_Error::__set_state(array(
‘errors’ =>
array (
‘http_request_failed’ =>
array (
0 => ‘cURL error 7: Failed to connect to gateway.watsonplatform.net port 443: Connection refused’,
),
),
‘error_data’ =>
array (
),
))

Am I doing something wrong?