Unable to connect to localhost when offline

Environment questions

GTA V version: Latest
Up to date: Yes
Legit or Pirate copy: Legit
Purchased where - Steam/Rockstar Launcher/Epic: Epic
Windows version: Windows 10
Did you try to delete content_index.xml and try again? No
System specifications:

If you can’t start the game at all

GTA V folder screenshot:
GTA V/update/x64/dlcpacks screenshot:
Filepath to FiveM folder:
FiveM client folder screenshot:
Which antivirus/firewall software are you using? None
Did you try to disable/uninstall your Anti-virus?

Important parts

What is the issue you’re having?
I can’t connect to a fiveM Server on my local machine.
What are you trying to do?
I’m trying to join a server running on my machine whilst not having an internet connection
What have you tried already to fix the issue?
Switching to Canary

Error screenshot (if any):

What did you do to get this issue?
I pressed F8 and typed “connect localhost”

Additional comments

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