==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.6.7
- Deployed with iRedMail Easy or the downloadable installer? Installer
- Linux/BSD distribution name and version: AlmaLinux 8
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

While upgrading from 1.6.7 to 1.6.8 following the instructions from https://docs.iredmail.org/upgrade.iredm … .6.8.html, the upgrade of mlmmjadmin 3.1.9 failed with the following error:

    *** uWSGI compiling embedded plugins ***
    [gcc -pthread] plugins/python/python_plugin.o
    In file included from plugins/python/python_plugin.c:1:
    plugins/python/uwsgi_python.h:4:10: fatal error: Python.h: No such file or directory
     #include <Python.h>
              ^~~~~~~~~~
    compilation terminated.

    ----------------------------------------

Command "/usr/bin/python3.6 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-bdgyjoof/uwsgi/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-47yloypw-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-bdgyjoof/uwsgi/
<<< ERROR >>> Failed to install Python 3 modules, please try to install them manually:  uwsgi