You'll want to check out the Help document for platform-specific instructions and troubleshooting steps. * Some caveats and additional steps may be required on Mac. see the Mac section of the HELP ...
Go to 'Mods' in the Main Menu. Select the mod you want to hide. Enable the 'Hide Mod' checkbox in the bottom left corner. Repeat for all mods you want to hide. Go into Singleplayer and run '/modspoof' ...
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