Wifi stopped working after updating yesterday

I use this repo for drivers https://github.com/aircrack-ng/rtl8812au. I tried reinstalling drivers, it showed an error that linux headers not found. After the update, linux headers got updated as well hence version mismatch. I think downgrading headers to the previous version might help, but I don’t know how to do that.

Sorry if obvious, did you reboot after update to your kernel?

yes

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