Oros42/IMSI-catcher Issue

[ghafoorabdul405]

While running this command on kali linux:
sudo python simple_IMSI-catcher.py --sniff

I am facing this issue:

File "simple_IMSI-catcher.py", line 111
new_imsi = f"{mcc} {mnc} {new_imsi[6:]}"
^
SyntaxError: invalid syntax