OSX agent - No communication with server

Hello,

I'm testing OCS Inventory. I installed on Ubuntu 15.04/Apache, server v2.3RC. I installed the agent v2.1.1 on a MacOS sierra. But the agent is not sending anything back to the server. By checking the log file, I can see the last line 

[Sat Dec 10 23:31:23 2016][error] Deflating problem 

Any idea to solve this issue? This it my ocsinventory-agent.cfg file

• server=https://ocs.edservices.fr
• logfile=/var/log/ocsng.log
• debug=1
• lazy=0
• ssl=1