OSX: You have reached this menu due to missing or unlocatable content/data. You may consider adding -basedir /path/to/game to your launch commandline.
Workarounds
Move Xonotic.app somewhere else and back using the Finder.
OR
Move the whole Xonotic folder from downloads
somewhere else - e.g. applications
.
OR
Double click xonotic-osx-sdl
.
OR
(might not work in Catalina) In the Finder, control-click the app icon, then choose Open from the shortcut menu. Click Open on the dialog.
OR
(might not work in Catalina) Use xattr -r -d com.apple.quarantine "/path/to/Xonotic.app"
Original issue
Every time I open the xonotic app, a menu pops up and says you have reached this menu due to missing or unlocatable content, consider adding -basedir/path/to/game to your launch command line. The only way I have got game to start up was to use this command "open /Applications/Xonotic/Xonotic.app/Contents/MacOS/xonotic-osx-sdl-bin" but the game doesn't produce sound. How do you fix this issue.
Edit: I have just figured out the sound problem by using xonotic-osx-sdl- instead of the file with -bin but I haven't yet figured out the basedir/path/to/game