Upload fails: "avrdude: ser_open(): can't open device"

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Continuing the discussion from Upload fails: "avrdude: stk500_recv(): programmer is not responding":

Hi @ptillisch, I'm having the same problem as @manu_rs, but I'm getting a different error message:

Sketch uses 2256 bytes (6%) of program storage space. Maximum is 32256 bytes.
Global variables use 188 bytes (9%) of dynamic memory, leaving 1860 bytes for local variables. Maximum is 2048 bytes.
"/Users/artur_cytrynowicz/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/bin/avrdude" "-C/Users/artur_cytrynowicz/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf" -v -V -patmega328p -carduino "-P/dev/cu.usbmodem1101" -b115200 -D "-Uflash:w:/Users/artur_cytrynowicz/Library/Caches/arduino/sketches/569D7C2E55C8ADAF1017A39FDD468443/sketch_feb12a.ino.hex:i"

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 "/Users/artur_cytrynowicz/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf"
         User configuration file is "/Users/artur_cytrynowicz/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : /dev/cu.usbmodem1101
         Using Programmer              : arduino
         Overriding Baud Rate          : 115200
avrdude: ser_open(): can't open device "/dev/cu.usbmodem1101": No such file or directory

avrdude done.  Thank you.

Failed uploading: uploading error: exit status 1

How can I fix my problem?

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There is no access to the port, probably user rights.
Which OS?

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