Answered: error 500 can't connect to ocsinventory-ng:80

thank you so much for your help, indeed i no longer have the error message on the file /var/log/ocsinventory-agent/onsinventory-agent.log

root@ubuntu:/var/log/ocsinventory-agent# vim ocsinventory-agent.log

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::OS::MacOS ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::OS::Solaris ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Docker ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Jails ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Libvirt ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Lxc ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Parallels ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Qemu ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::SolarisZones ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::VirtualBox ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::VmWareDesktop ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::VmWareESX ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::VmWareWorkstation ignored

[Fri Mar 23 12:03:43 2018][debug]  - dmidecode found

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Xen::XL ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::Xen::XM ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::Virtualization::XenCitrixServer ignored

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::IpDiscover::Nmap disabled because of a 'runMeIfTheseChecksFailed' in 'Ocsinventory::Agent::Backend::IpDiscover::Nmap'

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::OS::Linux::Distro::NonLSB disabled because of a 'runMeIfTheseChecksFailed' in 'Ocsinventory::Agent::Backend::OS::Linux::Distro::NonLSB'

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::OS::Linux::Distro::NonLSB::Oracle disabled because of a 'runMeIfTheseChecksFailed' in 'Ocsinventory::Agent::Backend::OS::Linux::Distro::NonLSB'

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::OS::Linux::Distro::NonLSB::Debian disabled because of a 'runMeIfTheseChecksFailed' in 'Ocsinventory::Agent::Backend::OS::Linux::Distro::NonLSB'

[Fri Mar 23 12:03:43 2018][debug] Running Ocsinventory::Agent::Backend::AccessLog

[Fri Mar 23 12:03:43 2018][debug] Running Ocsinventory::Agent::Backend::DeviceID

[Fri Mar 23 12:03:43 2018][debug] Running Ocsinventory::Agent::Backend::IpDiscover

[Fri Mar 23 12:03:43 2018][debug] Ocsinventory::Agent::Backend::IpDiscover has no run() function -> ignored

[Fri Mar 23 12:03:43 2018][debug] Running Ocsinventory::Agent::Backend::IpDiscover::IpDiscover

[Fri Mar 23 12:03:43 2018][debug] Scanning the 172.X.X.X network