After systemctl enable --now ocsinventory-agent in /var/log/ocsinventory-agent/ocsinventory-agent.log:

[Wed 27 Nov 2019 12:43:21 AM EET] Running ocsinventory-agent --wait 100 --lazy --nolocal --server=... Failed to load Ocsinventory::Agent, syntax error at /usr/share/perl5/vendor_perl/Ocsinventory/Agent/Network.pm line 56, near "};" Compilation failed in require at /usr/share/perl5/vendor_perl/Ocsinventory/Agent.pm line 33. BEGIN failed--compilation aborted at /usr/share/perl5/vendor_perl/Ocsinventory/Agent.pm line 33. Compilation failed in require at (eval 1) line 1. BEGIN failed--compilation aborted at (eval 1) line 1.

I use the following patch for this error: --- Ocsinventory-Unix-Agent-2.6.0.orig/lib/Ocsinventory/Agent/Network.pm 2018-07-28 18:27:52.000000000 +0300 +++ Ocsinventory-Unix-Agent-2.6.0/lib/Ocsinventory/Agent/Network.pm 2019-07-02 09:31:55.271132600 +0300 @@ -49,13 +49,11 @@ my $version = 'OCS-NG_unified_unix_agent_v'; $version .= exists ($self->{config}->{VERSION})?$self->{config}->{VERSION}:''; $self->{ua}->agent($version); - $self->{config}->{user}.",". - my $password = $self->{config}->{password}.""; $self->{ua}->credentials( $uaserver, # server:port, port is needed $self->{config}->{realm}, $self->{config}->{user}, - $password, + $self->{config}->{password}, );

 #Setting SSL configuration depending on LWP version

--- Ocsinventory-Unix-Agent-2.6.0.orig/lib/Ocsinventory/Agent/Network.pm        2018-07-28 18:27:52.000000000 +0300
+++ Ocsinventory-Unix-Agent-2.6.0/lib/Ocsinventory/Agent/Network.pm     2019-07-02 09:31:55.271132600 +0300
@@ -49,13 +49,11 @@
     my $version = 'OCS-NG_unified_unix_agent_v';
     $version .= exists ($self->{config}->{VERSION})?$self->{config}->{VERSION}:'';
     $self->{ua}->agent($version);
-    $self->{config}->{user}.",".
-    my $password = $self->{config}->{password}."";
     $self->{ua}->credentials(
         $uaserver, # server:port, port is needed
         $self->{config}->{realm},
         $self->{config}->{user},
-        $password,
+        $self->{config}->{password},
     );

     #Setting SSL configuration depending on LWP version

You use the similar patch, but you have extra ; at the end of the line $self->{config}->{password};. If I remove ; then it works.