As my title, I always have the following error message on Hardware Status (URL/hw_proxy/status)

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scanner : error

[Errno 2] No such file or directory: '/dev/input/by-id/'

'NoneType' object has no attribute 'grab'

[Errno 2] No such file or directory: '/dev/input/by-id/'

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It keep repeat producing this error message until I shutdown the raspberry PI. Any idea how to stop the posbox keep scanning the Scanner? Because I don't use the scanner, only printer