Method error

src/main/java/field/graphics/Windows.java:103–118

(int error, String description)

			@Override
			public void error(int error, String description) {
				System.err.println(" ERROR in GLFW windowing system :" + error + " / " + description);
				Runnable r = () -> {
					checkClassLoader();
					System.err.println(" ERROR in GLFW windowing system :" + error + " / " + description);
					new Exception().printStackTrace();
				};

				if (checkThread()) r.run();
				else {
					events.addLast(r);
					RunLoop.main.shouldSleep.add(Windows.this);
					RunLoop.main.interrupt();
				}
			}

			@Override
			public void windowFocus(long window, boolean focused) {
				Runnable r = () -> {
					checkClassLoader();