Why is there an error when loading a program in arduino?

Question

Arduino

robotdyn
nano v3 board ATmega328 (CH340G)
basick->blink example Error
loading

/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -carduino -P/dev/cu.wch ch341 USB=>RS232 1440 -b57600 -D -Uflash:w:/var/folders/nh/y0xqtzp13wg1vb2h4vzgdk0r0000gn/T/buildd5ae82e677127ac286f51de66781d807.tmp/Blink.ino.hex:i 

avrdude: Version 6.3, compiled on Jun 14 2016 at 19:15:19
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/gbv/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/cu.wch
         Using Programmer              : arduino
avrdude: ser_open(): can't open device "/dev/cu.wch": No such file or directory

avrdude done.  Thank you.

Проблема загрузки в плату. Помощь по загрузке: http://www.arduino.cc/en/Guide/Troubleshooting#upload .
Плата /dev/cu.wch ch341 USB=>RS232 1440 недоступна

Answer 1

Why is there an error when loading a program in arduino?

Yes, that's why:
A quick Google search for the above reason gives this answer: 0xcf.com/2015/03/13/chinese-arduinos-with-ch340-ch...