Have you tried searching for the error you get? When I paste the exact error from your log in ddg this is de first hit with some good advice as in what to check and do: https://bbs.archlinux.org/viewtopic.php?id=211967
For more help it would be good to list your hardware and check how hot it gets
and post some more information so we can see what’s really going on. Now we know the symptom of the disease, but we need some more probing to know where the origin lies…
An inxi --admin --verbosity=7 --filter --no-host --width would be the minimum required information… (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
That “error” is just a warning and has nothing to do with your fans.
P.S. If you enter a bit more details in your profile, we can also see which Desktop Environment you’re using, which CPU/GPU you have, …