When I run pysim ,I cannot read the card ,and always tell me this: lab434@lab434-OptiPlex-7050:~/pysim$ ./pySim-read.py -p0 Reading ... ICCID: Traceback (most recent call last): File "./pySim-read.py", line 99, in <module> print("IMSI: %s" % (dec_imsi(res),)) File "/home/lab434/pysim/pySim/utils.py", line 57, in dec_imsi l = int(ef[0:2]) * 2 # Length of the IMSI string ValueError: invalid literal for int() with base 10: 'ff'

Anything you know may help me ,thank you !