ampy not working after raspberry pi 4 dist-upgrade

[JohnGooler]

Hi,

ampy not workig after upgrade the OS,

pi@RasPB4:~/Downloads/ampy $ sudo ampy -p /dev/ttyS0 ls Traceback (most recent call last): File "/usr/local/bin/ampy", line 33, in sys.exit(load_entry_point('adafruit-ampy==1.0.8.dev22+g07ab2a9', 'console_scripts', 'ampy')()) File "/usr/lib/python3/dist-packages/click/core.py", line 764, in call return self.main(*args, **kwargs) File "/usr/lib/python3/dist-packages/click/core.py", line 717, in main rv = self.invoke(ctx) File "/usr/lib/python3/dist-packages/click/core.py", line 1137, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/usr/lib/python3/dist-packages/click/core.py", line 956, in invoke return ctx.invoke(self.callback, **ctx.params) File "/usr/lib/python3/dist-packages/click/core.py", line 555, in invoke return callback(*args, **kwargs) File "/usr/local/lib/python3.7/dist-packages/adafruit_ampy-1.0.8.dev22+g07ab2a9-py3.7.egg/ampy/cli.py", line 194, in ls File "/usr/local/lib/python3.7/dist-packages/adafruit_ampy-1.0.8.dev22+g07ab2a9-py3.7.egg/ampy/files.py", line 167, in ls File "/usr/local/lib/python3.7/dist-packages/adafruit_ampy-1.0.8.dev22+g07ab2a9-py3.7.egg/ampy/pyboard.py", line 194, in enter_raw_repl File "/usr/local/lib/python3.7/dist-packages/adafruit_ampy-1.0.8.dev22+g07ab2a9-py3.7.egg/ampy/pyboard.py", line 162, in read_until File "/usr/lib/python3/dist-packages/serial/serialutil.py", line 590, in inWaiting return self.in_waiting File "/usr/lib/python3/dist-packages/serial/serialposix.py", line 467, in in_waiting s = fcntl.ioctl(self.fd, TIOCINQ, TIOCM_zero_str) OSError: [Errno 5] Input/output error