As reported by fatherbushido, there is a "New RMS Test" map that does nothing besides placing civic centers.
There map was introduced for #6 in rP9096 and there is exactly no reason to keep it, so lets delete it.
If this map, or any other (for example atlas test) map without gaia entities, i.e. without spawn points was started in capture the relic victory gamemode,
there would be some unreadable error messages. Instead throw a readable message and add an early return.
Also relics can become destroyed for any reason, for example by some trigger script like D229 or when using the developer cheat to control all units.
The code should handle that case gracefully, show a warning instead of an error and restart the victory timer properly.