so I unzipped and made the addons folder but...
ERROR: Attempt to open script 'res://addons/mod_loader/mod_loader_setup.gd' resulted in error 'File not found'.
at: (modules\gdscript\gdscript.cpp:1032)
ERROR: Failed loading resource: res://addons/mod_loader/mod_loader_setup.gd. Make sure resources have been imported by opening the project in the editor at least once.
at: (core\io\resource_loader.cpp:274)
ERROR: Can't load script: addons/mod_loader/mod_loader_setup.gd
at: (main\main.cpp:2923)