I Get to the attack point and the listening konsole window opens and then nothing. When I ctrl C I have this log.

File "/home/dalamar/Downloads/BrainStorm-THM-ChatServer.exe-Exploit/brainstorm.py", line 139, in
output = subprocess.getoutput(f'konsole -e bash -c "nc -nlvp {LPORT}; exec bash"')
File "/usr/lib/python3.9/subprocess.py", line 647, in getoutput
return getstatusoutput(cmd)[1]
File "/usr/lib/python3.9/subprocess.py", line 628, in getstatusoutput
data = check_output(cmd, shell=True, text=True, stderr=STDOUT)
File "/usr/lib/python3.9/subprocess.py", line 424, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib/python3.9/subprocess.py", line 507, in run
stdout, stderr = process.communicate(input, timeout=timeout)
File "/usr/lib/python3.9/subprocess.py", line 1121, in communicate
stdout = self.stdout.read()
KeyboardInterrupt

hello sir,

why did did you use this bad char?

-b '\x00\n\r\x20'

can u explain ?