SSL Error while deploy add-on

Hello.
I developed a report for the Jira Cloud platform.
Published it via nginx. Nginx configured as https (ssl), for my domain there is an authorized and valid SSL certificate. When trying to add this application to Jira, I get the error "An SSL error occurred when we tried to contact the app host at https://jira-orders.projects2.investsoft.org. Please try again later or contact the app vendor. See also Troubleshooting SSL issues in the developer documentation. "

Please help me with the cause of this error.

I find out the problem
My nginx was misconfigured.
Here is correct way to configure nginx