Emacs

you need to update all your packages first before loading any user inti file to isolate other issues.

the root cause of the error is that define-obsolete-variable-alias now requires four arguments instead of three (and one optional argument). so outdated packages may use wrong calling conventions.

Wow giving up C and vim in one go.

wth is this? ):

That's an unbalanced parenthesis. You are not allowed emoticons in Lispland, and will have to upgrade to emojis, like so: 😄