Problem with installing coquiTTS on ubuntu

[stalevna]

I am trying to install coquiTTS on Ubuntu 18.04.5 LTS

name -a returns the following
4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

python 3.6.9

When I run the following command:

git clone https://github.com/coqui-ai/TTS
pip install -e .[all,dev,notebooks,tf]

repository clones just fine, but when I run pip install I get an exception:

Exception:
Traceback (most recent call last):
File "/home/user/coquiTTSenv/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/home/user/coquiTTSenv/lib/python3.6/site-packages/pip/commands/install.py", line 290, in run
with self._build_session(options) as session:
File "/home/user/coquiTTSenv/lib/python3.6/site-packages/pip/basecommand.py", line 69, in _build_session
if options.cache_dir else None
File "/usr/lib/python3.6/posixpath.py", line 80, in join
a = os.fspath(a)
TypeError: expected str, bytes or os.PathLike object, not int

Have anyone else run into this problem? Could you kindly help me with it?

[stalevna]

I have resolved the issue, turns out I didn't have pip installed