This is strange.
Your file rbfeeder.ini has following line commented out (i.e. has # at it's start), so it becomes ineffective.
[dump978]
#dump978_enabled=true
With above setting the rbfeeder should NOT try to connect to dump978, but your status shows it is trying to connect to dump978 and fails. This is strange and abnormal behaviour.
OK, ley us try to tell rbfeeder more positively that dump978 is not enabled by this way:
(2) Remove # from start of the line.
(1) change true to false
The line becomes like this:
[dump978]
dump978_enabled=false
(3) Save file (Ctrl+O) and close (Ctrl+x)
(4) Now restart rbfeeder, then again check status:
sudo systemctl restart rbfeeder
After few minutes:
sudo systemctl status rbfeeder
.