ATLauncher (1.20.2, 1.19.4) - Launcher for Modpacks, Free Server - 9Minecraft.Net
How to Make a Minecraft Server on PC using ATLauncher - YouTube
Steam Deck, downloaded Pixelmon Modpack with ATLauncher. Was able to launch but when choosing a lobby within Pixelmon Realms Server, I get this. Any help will be appreciated : r/PixelmonMod