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Originally Posted by leaffan Also, I am installing with LGSMhttps://linuxgsm.com/lgsm/l4d2server/. Doesn't that matter? So it wouldn't be a problem anyway?

LinuxGSM has nothing to do with Pterodactyl Panel. Both are completely different in how they work, I recommended Pterodactyl Panel to you because you were trying to install a web panel to manage game servers and Pterodactyl Panel is the best when it comes to web-based game server management tools.
If you want any help, add me on discord.