According to the man page, https://man-pages.ipfire.org/libloc/location.html
the command "location verify" should work w/o any parameters. 

[root@ip151 ~]# location verify
Traceback (most recent call last):
  File "/usr/bin/location", line 618, in <module>
    main()
  File "/usr/bin/location", line 616, in main
    c.run()
  File "/usr/bin/location", line 222, in run
    ret = args.func(db, args)
TypeError: handle_verify() takes 2 positional arguments but 3 were given