apache2 cookbook upload ssl error

I am able to upload every other cookbook but apache2 upload fails with following error.
I am running my chef-server in Azure (its open source version 11.x)

Uploading apache2 [3.1.0]
ERROR: SSL Validation failure connecting to host: xx.xx.xx.xx - SSL_read: cert already in hash table
ERROR: Could not establish a secure connection to the server.
Use knife ssl check to troubleshoot your SSL configuration.
If your Chef Server uses a self-signed certificate, you can use
knife ssl fetch to make knife trust the server’s certificates.

Original Exception: OpenSSL::SSL::SSLError: SSL_read: cert already in hash table

I am unable to understand why specifically for apache2 cookbook.