==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I recently performed 2 identical installs of the community version of iRedMail 1.62 on Rocky Linux 8.7 fully updated etc... followed instructions off of the wiki.

The python web.py module didn't install automatically on both, not sure if that should have been a preinstall requirement or if the scripts tried to install it and I missed the error.

The fix was to first install pip3 (in this case python39-pip was the actual Rocky Linux Package name) as it wasn't installed on my systems.

Command to install: dnf -y install python39-pip

Then you can run : pip3 install web.py

I got most of this fix from prior posts for debian or other flavors. Just thought I would share in case someone else comes across the same issues.