SENDY 'Error communicating with Amazon SNS API: There was a problem executing this request.'

Question

Since I have update Sendy, I have this error:
'Error communicating with Amazon SNS API: There was a problem executing this request. OpenSSL SSL_connect: Conexi?n reinicializada por la m?quina remota in connection to sns.eu-west-3.amazonaws.com:443'
This is the url that Sendy call by curl: 'https://sns.eu-west-3.amazonaws.com/?Action=ListSubscriptionsOpenSSL'.
The response message is 'Could not find operation ListSubscriptionsOpenSSL for version 2010-03-31'.
This error doesn't allow me to send email test and select list in campaigns. How can I fix it ?