Arduino: 1.6.11 (Windows 7), Papan:"Arduino/Genuino Uno" C:\Users\Zulkifli Syamsul\Documents\Arduino\sketch_aug25b\sketch_aug25b.ino: In function 'void setup()': sketch_aug25b:56: error: 'class MFRC522' has no member named 'begin' nfc.begin(); ^ sketch_aug25b:57: error: 'class MFRC522' has no member named 'getFirmwareVersion' byte .