bruteforce script missing file?

[jsmif]

When I run "make bf", it seems to hang or be waiting for input after "BEGIN: 198775, END: 218775, KS_BYTES: 400", so my output initially looks like this:

make bf
python2 bf.py
2023-05-10 14:39:13,259 root WARNING attack Assuming FEC and whitening already computed by Ubertooth
2023-05-10 14:39:13,259 root INFO attack BTADDR_M : bytearray(b'\xcc\xfa\x00p\xdc\xb6')
2023-05-10 14:39:13,259 root INFO attack start lmp and hci iblue monitors: sudo ubertooth-rx -l 70dcb6 -u 00  -r nexus.pcap
2023-05-10 14:39:13,259 root INFO attack BTADDR_S : bytearray(b'\x82\x9ff\x9b\xda$')
2023-05-10 14:39:13,259 root INFO attack Kl       : bytearray(b"\xd5\xf2\x07D\xc0]\x08`\x1d(\xfa\x1d\xd7\x9c\xdc\'")
2023-05-10 14:39:13,259 root INFO attack AU_RAND  : 722e6ecd32ed43b7f3cdbdc2100ff6e0
2023-05-10 14:39:13,286 root INFO attack SRES     : bytearray(b'\xb0\xa3\xf4\x1f')
2023-05-10 14:39:13,286 root INFO attack R_SRES   : bytearray(b'\xb0\xa3\xf4\x1f')
2023-05-10 14:39:13,286 root INFO attack ACO = COF: bytearray(b'\x1c\xe4\xf9Bm\xc2\xbc\x11\x04r\xd6\x8e')
2023-05-10 14:39:13,286 root INFO attack ACO = COF: 1ce4f9426dc2bc110472d68e
2023-05-10 14:39:13,286 root INFO attack EN_RAND  : d72fb4217dcdc3145056ba488bea9076
2023-05-10 14:39:13,310 root INFO attack Kc       : bytearray(b"\xa3\xfc\xce\xf2*\xd2#,z\xcb\x01\xe9\xb9\xedg\'")
2023-05-10 14:39:13,310 root INFO attack Kc       : a3fccef22ad2232c7acb01e9b9ed6727
2023-05-10 14:39:13,383 root INFO attack Kc_prime : bytearray(b'\x7f\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff'), entropy: 1 Byte
2023-05-10 14:39:13,383 root INFO attack Kc_prime : 7fffffffffffffffffffffffffffffff, entropy: 1 Byte
Make sure to make e0 with correct Kc_prime, and BTADDR_M
BEGIN: 198775, END: 218775, KS_BYTES: 400

If I wait for a bit and then hit ctrl-c or enter, I get:

2023-05-10 14:44:16,702 root INFO attack # BEGIN bruteforce : CT6-RCLK-KS400-198775-218775.bf
2023-05-10 14:44:16,702 root INFO attack            343 CT  : 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
2023-05-10 14:44:16,702 root INFO 
2023-05-10 14:44:16,702 root INFO PATTERNS: {'cccc': 'cccc', 'f_i_l_e': 'f\x00i\x00l\x00e', 'L2CAP1_R': '\x00\x01\x00\x08', 'L2CAP1_TR': '\x00I\x00\x03', 'image': 'image', 'L2CAP3': '\n\x00\x01\x00', 'bbbb': 'bbbb', 'L2CAP1_T': '\x03\x00I\x00', 'aaaa': 'aaaa', 'dddd': 'dddd', 'L2CAP1': '\x08\x00\x01\x00', 'L2CAP2': '\x0c\x00\x01\x00', 'L2CAP2_R': '\x00\x01\x00\x0c', 'jpeg': 'jpeg', 'j_p_e_g': '\x06a\x00p\x00e\x00g', 'L2CAP3_R': '\x00\x01\x00\n'}
Traceback (most recent call last):
  File "bf.py", line 211, in <module>
    p = Popen(ARGS, stdout=PIPE)
  File "/usr/lib/python2.7/subprocess.py", line 394, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1047, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
make: *** [Makefile:4: bf] Error 1

"CT6-RCLK-KS400-198775-218775.bf" is in the folder just fine, so I'm wondering if the file it can't find is the "nexus.pcap", in reference to the attack start lmp and hci iblue monitors: sudo ubertooth-rx -l 70dcb6 -u 00 -r nexus.pcap line?

(I tried cp ../poc-internalblue/sample-nexmaster-galaxys9slave.pcapng nexus.pcap but that didn't help)

Note: I don't seem to see any errors with "make tests" (if that was supposed to create the pcap or something.)