1.8.10 ISSUES

eharms:
I cannot upload sketch's to the board. I get the following error message:

avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "/private/var/folders/7l/44l45xmx3v1d7snmk_b_11f40000gn/T/AppTranslocation/C52E28C0-C9DB-4642-B924-4557D0DB219E/d/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
User configuration file is "/Users/maced/.avrduderc"
User configuration file does not exist or is not a regular file, skipping

Using Port : /dev/cu.usbmodem14401
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can't open device "/dev/cu.usbmodem14401": Resource busy

avrdude done. Thank you.

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

I'm also facing the issue, please help me to resolve this issue.