func (l *Logger) Error(args ...interface{}) {
	l.Output(2, LevelError, fmt.Sprint(args...))
}
func (l *Logger) Error(args ...interface{}) {
	l.Output(2, LevelError, fmt.Sprint(args...))
}
func ( l * Logger ) Error ( args ... interface { } ) { l . Output ( 2 , LevelError , fmt . Sprint ( args ... ) ) }
// Error records the log with error level
Error records the log with error level