You're welcome although I suspect you may need someone with more knowledge and experience.
/etc/resolv.conf is owned by the package
filesystem, so maybe try reinstalling that.
If the update was interrupted then you may have corrupted something, you could try reinstalling the last update, and/or reverting it. To find out what got updated you can view
The package files are in
/var/cache/pacman/pkg, you can list all the packages for something with
ls | grep something. You can install a local package with
sudo pacman -U package, if you're not in the package directory then you'll need the absolute path. Probably teaching a grandmother to suck eggs atm, but just in case.
Reinstalling all packages is probably overkill (or useless), but it is easier than reinstalling the update manually. Will take some time, I mention it in case you have trouble with reinstalling the update.
pacman -Qqn | sudo pacman -S -
List the installed kernels.
List the available kernels.
Install kernel 4.19
mhwd-kernel -i linux419
If none of that helps you may need a reinstall, unless someone more knowledgeable comes along with an answer. I don't know the cause so I'm not sure if a reinstall will be helpful, at least once you update.
For any further troubleshooting, the output of these commands may be useful
inxi -Fxxxx --no-host,
mhwd-kernel -li. Look through your logs to see if there are any errors relating to networking or the filesystem/storage etc. The post I linked to may help.
@ertan Read the link I posted above and start a thread of your own.