I did : pamac update and and got some errors of signatures.No idea what that means:
Making package: imagemagick6 6.9.12.42-1 (Tue 29 Mar 2022 11:12:29 BST)
==> Checking runtime dependencies…
==> Checking buildtime dependencies…
==> Retrieving sources…
→ Found ImageMagick-6.9.12-42.tar.gz
→ Found ImageMagick-6.9.12-42.tar.gz.asc
→ Found arch-fonts.diff
==> Validating source files with sha256sums…
ImageMagick-6.9.12-42.tar.gz … Passed
ImageMagick-6.9.12-42.tar.gz.asc … Skipped
arch-fonts.diff … Passed
==> Verifying source file signatures with gpg…
ImageMagick-6.9.12-42.tar.gz … FAILED (unknown public key 89AB63D48277377A)
==> ERROR: One or more PGP signatures could not be verified!
Error: Failed to build imagemagick6
imagemagick6 is the old pkgbase from when it was in the Arch repos, libmagick6 is the pkgname. That’s why Pamac can’t find it since there’s no package named imagemagick6.