Empire Iptools moduel error

root@wesley2:/opt/Empire# ./empire
Traceback (most recent call last):
  File "./empire", line 14, in <module>
    from lib.common import empire, helpers
  File "/opt/Empire/lib/common/__init__.py", line 10, in <module>
    from . import helpers
  File "/opt/Empire/lib/common/helpers.py", line 58, in <module>
    import iptools
ModuleNotFoundError: No module named 'iptools'

root@wesley2:/opt/Empire# cd setup
root@wesley2:/opt/Empire/setup# pip install -r requirements.txt
Requirement already satisfied: urllib3 in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 1)) (1.24.1)
Requirement already satisfied: requests in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 2)) (2.21.0)
Requirement already satisfied: setuptools in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 3)) (41.2.0)
Requirement already satisfied: iptools in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 4)) (0.7.0)
Requirement already satisfied: pydispatcher in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 5)) (2.0.5)
Requirement already satisfied: flask in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 6)) (1.1.1)
Requirement already satisfied: macholib in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 7)) (1.11)
Requirement already satisfied: dropbox in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 8)) (9.4.0)
Requirement already satisfied: pyOpenSSL in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 9)) (19.0.0)
Requirement already satisfied: pyinstaller in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 10)) (3.5)
Requirement already satisfied: zlib_wrapper in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 11)) (0.1.3)
Requirement already satisfied: netifaces in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 12)) (0.10.9)
Requirement already satisfied: M2Crypto in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 13)) (0.31.0)
Requirement already satisfied: jinja2 in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 14)) (2.10.1)
Requirement already satisfied: cryptography in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 15)) (2.6.1)
Requirement already satisfied: pyminifier in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 16)) (2.1)
Requirement already satisfied: xlutils in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 17)) (2.0.0)
Requirement already satisfied: pycrypto in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 18)) (2.6.1)
Requirement already satisfied: pefile in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 19)) (2019.4.18)
Requirement already satisfied: simplejson in /usr/lib/python2.7/dist-packages (from -r requirements.txt (line 20)) (3.16.0)
Requirement already satisfied: altgraph>=0.15 in /usr/local/lib/python2.7/dist-packages (from macholib->-r requirements.txt (line 7)) (0.16.1)
Requirement already satisfied: six>=1.3.0 in /usr/lib/python2.7/dist-packages (from dropbox->-r requirements.txt (line 8)) (1.13.0)
Requirement already satisfied: dis3 in /usr/local/lib/python2.7/dist-packages (from pyinstaller->-r requirements.txt (line 10)) (0.1.3)
Requirement already satisfied: xlwt>=0.7.4 in /usr/local/lib/python2.7/dist-packages (from xlutils->-r requirements.txt (line 17)) (1.3.0)
Requirement already satisfied: xlrd>=0.7.2 in /usr/local/lib/python2.7/dist-packages (from xlutils->-r requirements.txt (line 17)) (1.2.0)