code: private void logConfigurationError(String message, Throwable t) {
  
          setValidConfiguration(false);
          if (LOG.isErrorEnabled()) {
              if (t == null) {
                  LOG.error(Messages.get().getBundle().key(Messages.LOG_EDITOR_CONFIG_ERROR_1, message));
              } else {
                  LOG.error(Messages.get().getBundle().key(Messages.LOG_EDITOR_CONFIG_ERROR_1, message), t);
              }
          }
      }
docs: Logs configuration errors and invalidates the current configuration.<p>
  
  @param message the message specifying the configuration error
  @param t the Throwable object or null