Change message of unknown joypad property from error to warning

core/input/input.cpp

@@ -1365,8 +1365,9 @@ void Input::parse_mapping(String p_mapping) {
 
 		JoyButton output_button = _get_output_button(output);
 		JoyAxis output_axis = _get_output_axis(output);
-		ERR_CONTINUE_MSG(output_button == JoyButton::INVALID && output_axis == JoyAxis::INVALID,
-				vformat("Unrecognized output string \"%s\" in mapping:\n%s", output, p_mapping));
+		if (output_button == JoyButton::INVALID && output_axis == JoyAxis::INVALID) {
+			print_verbose(vformat("Unrecognized output string \"%s\" in mapping:\n%s", output, p_mapping));
+		}
 		ERR_CONTINUE_MSG(output_button != JoyButton::INVALID && output_axis != JoyAxis::INVALID,
 				vformat("Output string \"%s\" matched both button and axis in mapping:\n%s", output, p_mapping));