Black screen on boot and does not update the system due to 'adw-gtk3' 'adw-gtk-theme'

The syntax is not quite right - the output wasn’t posted to 0x0.st and you did not get a link back
You should have gotten this error instead:
curl: (26) Failed to open/read local data from file/application

it’s not this:
sudo pacman -Syu | curl -F ‘file=@-’ https://0x0.st

but this instead:
sudo pacman -Syu | curl -F 'file=@-' https://0x0.st

looks very similar - but one is correct, the other is not

this symbol: ’
vs
this symbol: ´

You can copy/paste it from this wiki page here.

You get back a link as a response which you can post here.