After an upgrade to Debian 9, and substituting PHP5 for PHP7, my open source netflow collector nfSen was apparently working, however after a restart of the server, it stopped working.
The error it is giving, when opening the main page is:
ERROR: nfsend connect() error: Connection refused!
ERROR: nfsend - connection failed!!
ERROR: Can not initialize globals!
What to do?
After debugging a little more, nfsend
is giving an error "PANIC nfsend dies: RRD version '1.5001' not yet supported!"