Can't make it work.

When trying to install, I get this:

Collecting beautifulsoup4==4.8.1
  Using cached beautifulsoup4-4.8.1-py3-none-any.whl (101 kB)
Collecting Pillow==6.2.1
  Using cached Pillow-6.2.1-cp38-cp38-manylinux1_x86_64.whl (2.1 MB)
Collecting selenium==3.141.0
  Using cached selenium-3.141.0-py2.py3-none-any.whl (904 kB)
Requirement already satisfied: soupsieve==1.9.5 in /usr/lib/python3/dist-packages (from -r requirements.txt (line 4)) (1.9.5)
Collecting urllib3==1.25.6
  Using cached urllib3-1.25.6-py2.py3-none-any.whl (125 kB)
ERROR: requests 2.21.0 has requirement urllib3<1.25,>=1.21.1, but you'll have urllib3 1.25.6 which is incompatible.
Installing collected packages: beautifulsoup4, Pillow, urllib3, selenium
  Attempting uninstall: beautifulsoup4
    Found existing installation: beautifulsoup4 4.8.2
    Not uninstalling beautifulsoup4 at /usr/lib/python3/dist-packages, outside environment /usr
    Can't uninstall 'beautifulsoup4'. No files were found to uninstall.
  Attempting uninstall: Pillow
    Found existing installation: Pillow 7.0.0
    Not uninstalling pillow at /usr/lib/python3/dist-packages, outside environment /usr
    Can't uninstall 'Pillow'. No files were found to uninstall.
  Attempting uninstall: urllib3
    Found existing installation: urllib3 1.25.8
    Not uninstalling urllib3 at /usr/lib/python3/dist-packages, outside environment /usr
    Can't uninstall 'urllib3'. No files were found to uninstall.
Successfully installed Pillow-6.2.1 beautifulsoup4-4.8.1 selenium-3.141.0 urllib3-1.25.6

Update:
I can run the command, but I get these another error:

Traceback (most recent call last):
  File "/usr/local/bin/pinterest-dl", line 8, in <module>
    from pinterestDL.pinterest_downloader import PinterestDownloader
ModuleNotFoundError: No module named 'pinterestDL'

[Lindsay-Needs-Sleep]

You could try running the script directly form the project folder. (not using the symlink)