==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.1 MARIADB edition.
- Deployed with iRedMail Easy or the downloadable installer? No
- Linux/BSD distribution name and version: CentOS Linux 7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): NGINX
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hi there! I have this error when run py script:

python3 greylisting_admin.py --list
Traceback (most recent call last):
  File "greylisting_admin.py", line 8, in <module>
    import web
ModuleNotFoundError: No module named 'web'

python3 wblist_admin.py --list --whitelist
Traceback (most recent call last):
  File "wblist_admin.py", line 8, in <module>
    import web

python3 --version
Python 3.6.8

What should I install? Thanks.