hostname: Name or service not known , Redundant argument in sprintf at ..../Networks.pm line 29.

Hello, Bonjour

I need help please;

whenever i try to launch the agent on my server it gives me the following messages:

hostname: Name or service not known
Redundant argument in sprintf at /usr/share/perl5/vendor_perl/Ocsinventory/Agent/Backend/OS/Linux/Network/Networks.pm line 29.

agent version :2.1.1

serveur version 2.1.1

os: fedora23

tanks for your time