Don't silently delete config.json if there is an error.

src/main/java/emu/grasscutter/Grasscutter.java

@@ -153,16 +153,22 @@ public final class Grasscutter {
 	 * Attempts to load the configuration from a file.
 	 */
 	public static void loadConfig() {
+		// Check if config.json exists. If not, we generate a new config.
+		if (!configFile.exists()) {
+			getLogger().info("config.json could not be found. Generating a default configuration ...");
+			config = new ConfigContainer();
+			Grasscutter.saveConfig(config);
+			return;
+		} 
+
+		// If the file already exists, we attempt to load it.
 		try (FileReader file = new FileReader(configFile)) {
 			config = gson.fromJson(file, ConfigContainer.class);
-		} catch (Exception exception) {
-			Grasscutter.saveConfig(null);
-			config = new ConfigContainer();
-		} catch (Error error) {
-			// Occurred probably from an outdated config file.
-			Grasscutter.saveConfig(null);
-			config = new ConfigContainer();
-		}
+		} 
+		catch (Exception exception) {
+			getLogger().error("There was an error while trying to load the configuration from config.json. Please make sure that there are no syntax errors. If you want to start with a default configuration, delete your existing config.json.");
+			System.exit(1);
+		} 
 	}
 
 	public static void loadLanguage() {