ModuleNotFoundError: No module named '__main__.lib'; '__main__' is not a package about sippts HOT 7 CLOSED

[root@sippts src]# git clone https://github.com/Pepelux/sippts.git
Cloning into 'sippts'...
remote: Enumerating objects: 2676, done.
remote: Counting objects: 100% (254/254), done.
remote: Compressing objects: 100% (86/86), done.
remote: Total 2676 (delta 176), reused 212 (delta 162), pack-reused 2422
Receiving objects: 100% (2676/2676), 855.78 KiB | 10.70 MiB/s, done.
Resolving deltas: 100% (1910/1910), done.
[root@sippts src]# cd sippts
[root@sippts sippts]# pip3 install .
WARNING: Running pip install with root privileges is generally not a good idea. Try `pip3 install --user` instead.
Processing /usr/src/sippts
  Requirement already satisfied (use --upgrade to upgrade): UNKNOWN==0.0.0 from file:///usr/src/sippts in /usr/local/lib/python3.6/site-packages
[root@sippts sippts]# sipenumerate -h
bash: sipenumerate: command not found

[root@sippts sippts]# find / -name sipenumerate
/usr/local/bin/sipenumerate
/usr/src/sippts/bin/sipenumerate
[root@sippts sippts]# /usr/local/bin/sipenumerate -h
Traceback (most recent call last):
  File "/usr/local/bin/sipenumerate", line 10, in <module>
    from sippts.sipenumerate import SipEnumerate
ModuleNotFoundError: No module named 'sippts'
[root@sippts sippts]# /usr/src/sippts/bin/sipenumerate -h
Traceback (most recent call last):
  File "/usr/src/sippts/bin/sipenumerate", line 10, in <module>
    from sippts.sipenumerate import SipEnumerate
ModuleNotFoundError: No module named 'sippts'