#1648-startup-error-debug-folder

fixes #1648
-added an exception for the debug folder when checking the map folders for scenario.luas, so it doesn't cause an error anymore

src/main/java/com/faforever/client/map/MapService.java

@@ -263,7 +263,7 @@ public MapBean readMap(Path mapFolder) throws MapLoadException {
 
     try (Stream<Path> mapFolderFilesStream = list(mapFolder)) {
       Path scenarioLuaPath = mapFolderFilesStream
-          .filter(file -> file.getFileName().toString().endsWith("_scenario.lua"))
+          .filter(file -> !file.getParent().getName(file.getParent().getNameCount() - 1).equals("debug") && file.getFileName().toString().endsWith("_scenario.lua"))
           .findFirst()
           .orElseThrow(() -> new MapLoadException("Map folder does not contain a *_scenario.lua: " + mapFolder.toAbsolutePath()));