'Programs are verifying, but not uploading to Arduino Uno [closed]

We've tried multiple solutions and have had no luck. We are trying to upload the CameraRobot program to an Arduino Uno using the IDE on macOS (Mojave and Monterey). The program verifies, the port recognizes the board, but we get the AVRDUDE error message:

programmer is not responding; not in sync

We've tried multiple boards, multiple cables, multiple adapters, and multiple computers.



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