Seems like you have unsupported packages installed, creating a dependency problem.
But without the real output we cant really know.
Maybe you could share with something like
sudo pacman -Syu > pacoutput.txt
curl -F'file=@pacoutput.txt' https://0x0.st
Which will send the file to the 0x0 pastebin, and provide you with the link.
Share the link here.
System info can be retrieved by
inxi -Farz
And similarly sent to 0x0 with
inxi -Farz | curl -F 'file=@-' https://0x0.st
I will also include a guide with tips like how to format code..