error because not use docker?

[dg1kwa]

My netbox is not inside docker:

python netbox-scanner.py nmap
Traceback (most recent call last):
File "/home/dg1kwa/netbox-scanner/netbox-scanner-master/netbox-scanner.py", line 15, in
from nbs import NetBoxScanner
File "/home/dg1kwa/netbox-scanner/netbox-scanner-master/nbs/init.py", line 137
clusterName = f'Docker {device['name']}'
^^^^
SyntaxError: f-string: unmatched '['