How can I fix this error?

I’m getting this error after upgrading my system.

warning: lib32-mesa: local (22.0.0-1) is newer than multilib (21.3.8-2)

:: Synchronizing package databases…
core is up to date
extra is up to date
community is up to date
multilib is up to date
:: Starting full system upgrade…
warning: lib32-mesa: local (22.0.0-1) is newer than multilib (21.3.8-2)
there is nothing to do

How can I fix this? Please help…

Nothing to fix.

I’m new to linux

You can downgrade with sudo pacman -Syyuu

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Is it very important to do that?
or I can ignore this warning?

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You can safely ignore it.

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It depends. If the package has been downgraded it is probably because it causes important issues. If you have no issues, you’re probably not affected by the probable issue.

You can do this to downgrade, sudo pacman -Syuu

This “error” means, that the version of the package is newer than in the repos.

Yes but it would be interesting to know why maintainers reverted the package, i did not find the clue.
I have the same message as the OP, nevertheless I have a NVIDIA hardware so, i think this not really a problem for me.

It’s probably in the discussions in the Unstable, Testing, or Stable announcement threads.