IndexError: list index out of range while setting up.

[siddhant-sharma2033427]

i was setting up but got error . i dont know anything about this error. Traceback (most recent call last): File "/home/siddhant/Downloads/android-as-monitor-linux/./setup.sh", line 66, in output = os.popen("xrandr | grep 'disconnected' | awk 'NR==1{print $1; exit}'").read().split()[0] IndexError: list index out of range