"Failed to commit transaction" error during routine update

Additionally, you could tidy your post for better readability; by placing the output in an appropriate preformatted text container; simply add three backticks ( ``` ) as indicated here:

This resulted in:
```
gort-prime% sudo pacman-mirrors -f && sudo pacman -Syyu

Errors occurred, no packages were upgraded.
gort-prime%
```
I also looked at the …

This formatting results in:

gort-prime% sudo pacman-mirrors -f && sudo pacman -Syyu
...
Errors occurred, no packages were upgraded.
gort-prime%

I also looked at the …

See also How to post command output and file content as Formatted Text.