Gnome doesn't start, no gdm.service, broken software databases

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5

I am sorry for not formatting my posts correctly.

sudo pacman -S gdm                     ✔  16s  
error: GPGME error: No data
error: GPGME error: No data
error: GPGME error: No data
error: GPGME error: No data
error: database 'core' is not valid (invalid or corrupted database (PGP signature))
error: database 'extra' is not valid (invalid or corrupted database (PGP signature))
error: database 'community' is not valid (invalid or corrupted database (PGP signature))
error: database 'multilib' is not valid (invalid or corrupted database (PGP signature))

I tried all the commands here "error: GPGME error: No data" when I'm trying to update - #5 by snowden17_38 but it still does not solve my problem.