owtf: Failed to launch on Kali Linux

After cloning the repo, starting the server manually, and python setup.py develop, owtf command is reporting error.

Expected Behavior

Running properly

Current Behavior

Not running and error is reported

Possible Solution

run python setup.py develop again and see two lines of error:

Collecting black==18.4a3
  Could not find a version that satisfies the requirement black==18.4a3 (from versions: )
No matching distribution found for black==18.4a3

error /root/owtf/owtf/webapp/node_modules/pngquant-bin: Command failed.
Exit code: 1

Not sure if this is the problem. Also, could be a database related problem since the error reported is a SQL instruction.

[SQL: 'SELECT DISTINCT plugins."group" AS plugins_group \nFROM plugins']

Steps to Reproduce (for bugs)

1. Clone the repo
2. Start pgsql with sudo systemctl enable postgresql
3. Create user with sudo su postgres -c "psql -c \"CREATE USER $db_user WITH PASSWORD '$db_pass'\"", user name is export db_user="owtf_db_user", pass is export db_pass="jgZKW33Q+HZk8rqylZxaPg1lbuNGHJhgzsq3gBKV32g="
4. Create database with sudo su postgres -c "psql -c \"CREATE DATABASE $db_name WITH OWNER $db_user ENCODING 'utf-8' TEMPLATE template0;\"", database name is export db_name="owtf_db"
5. owtf, which reports error

Logs

owtf_review:

[DEBUG] [2019-03-11 12:37:57,457] [File 'worker.py', line 100, in spawn_worker] - Adding a new worker
[DEBUG] [2019-03-11 12:37:57,466] [File 'worker.py', line 100, in spawn_worker] - Adding a new worker

The error reported is here

Context

It would be great if it can launch:)

Your Environment

• Linux kali 4.19.0-kali3-amd64 #1 SMP Debian 4.19.20-1kali1 (2019-02-14) x86_64 GNU/Linux
• Up-to-date branch
• pip 18.1 from /usr/lib/python2.7/dist-packages/pip (python 2.7)