Connect Web to Salseforce

Hi Support,

We have used your plugin to connect Gravity form with Salesforce.
Using the option of Web-to-Lead we get an error in log file while submitting and not get any lead on my salesforce account.

An error like this :
“There was an error adding the entry to Salesforce: cURL error 56: SSL read: error:00000000:lib(0):func(0):reason(0), errno 104”

Can you please check and let us know why it showing me this above error.
My salesforce account all setting work perfect because I have already tested it with Web to lead static form provided by Salesforce Team.

Please check and let us know asap.

Thanks,
Crish