Sorry to bother again but I can not install as the second board on the Pi(or stack 1) jumper in position 1
error below
>>> rel = sm_4rel4in.SM4rel4in(1,7)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.9/dist-packages/sm_4rel4in-1.0.5-py3.9.egg/sm_4rel4in/__init__.py", line 44, in __init__
File "/usr/local/lib/python3.9/dist-packages/smbus2-0.4.2-py3.9.egg/smbus2/smbus2.py", line 280, in __init__
self.open(bus)
File "/usr/local/lib/python3.9/dist-packages/smbus2-0.4.2-py3.9.egg/smbus2/smbus2.py", line 310, in open
self.fd = os.open(filepath, os.O_RDWR)
FileNotFoundError: [Errno 2] No such file or directory: '/dev/i2c-7'