Problems uploading my sketch: "avrdude: stk500_recv()"

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1

Hello there,
I'm experiencing problems while trying to upload my sketch, the following message appears. I've searched the forum, but none of the alternatives happen to work (most of them are for Arduino nano).
I've tried too the solution in troubleshooting, I've also intelled the last version of codecs and tried to different boards that normally works perfectly well.

I'm using Mac OS (last version), Arduino 1.8.13 and Arduino/genuino Uno

Thank you for your help

Arduino: 1.8.14 Hourly Build 2020/09/23 10:35 (Mac OS X), Board: "Arduino Uno"

Sketch uses 4958 bytes (16%) of program storage space. Maximum is 30720 bytes.
Global variables use 266 bytes (12%) of dynamic memory, leaving 1782 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00
Problem uploading to board.  See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.


This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
2

@daveprofe

Your topic was Moved to it's current location / section as it is more suitable.

Could you also take a few moments to Learn How To Use The Forum.

Other general help and troubleshooting advice can be found here.
It will help you get the best out of the forum in the future.

3

Oh sorry, I've read the guidelines, and as was not sure of what forum was the correct and I saw some similar post in troubleshooting I posted it there, but thank you.

4

To whom may have the same problem, it seems it is a problem of OS. Arduino app works on 32 and Mac OS on 64.

The solution is here, a version of 64 Mass update bundled resources by facchinm · Pull Request #8976 · arduino/Arduino · GitHub