[BUG] Salt minion complains that python-dateutil is not installed but it is

Salt minion complains that python-dateutil is not installed but it is...

Salt Version:
Salt: 3004.1

Dependency Versions:
cffi: Not Installed
cherrypy: Not Installed
dateutil: 2.8.2
docker-py: Not Installed
gitdb: Not Installed
gitpython: Not Installed
Jinja2: 2.11.1
libgit2: Not Installed
M2Crypto: 0.35.2
Mako: Not Installed
msgpack: 0.6.2
msgpack-pure: Not Installed
mysql-python: Not Installed
pycparser: Not Installed
pycrypto: Not Installed
pycryptodome: Not Installed
pygit2: Not Installed
Python: 3.6.8 (default, Nov 16 2020, 16:55:22)
python-gnupg: Not Installed
PyYAML: 3.13
PyZMQ: 17.0.0
smmap: Not Installed
timelib: Not Installed
Tornado: 4.5.3
ZMQ: 4.1.4

System Versions:
dist: centos 7 Core
locale: UTF-8
machine: x86_64
release: 3.10.0-1160.62.1.el7.x86_64
system: Linux
version: CentOS Linux 7 Core

I am getting these errors:

2022-04-29 16:38:25,710 [salt.utils.schedule:1043][ERROR ][11618] Missing python-dateutil. Ignoring job JOB1.
2022-04-29 16:38:26,720 [salt.utils.schedule:1043][ERROR ][11618] Missing python-dateutil. Ignoring job JOB2.
2022-04-29 16:38:26,721 [salt.utils.schedule:1043][ERROR ][11618] Missing python-dateutil. Ignoring job JOB1.

Not sure why this is happening. We have more than 400 minions and this is the only one that has that issue.

That server also has Nagios installed and it uses python2.. Maybe there is some kind of conflict? But I cannot find it...

Any ideas are greatly appreciated.

Thanks.

Reproduce the failure on Salt 3004.1 with Python 3.6.8 on CentOS 7, using the reported python-dateutil 2.8.2 environment. Start at the salt.utils.schedule error and compare the minion's dependency lookup with the interpreter that has dateutil installed; done means scheduled jobs are no longer ignored or the conflict is clearly diagnosed.