Conflicting files during update

[bill_t]

This thread will help you with your issue:

Update or package installation returns “Failed to commit transaction (conflicting files); FILENAME exists in filesystem”

I can’t install or update a package because I get (something like) this: error: could not prepare transaction error: failed to commit transaction (conflicting files) libname: /insert/file/name/here exists in filesystem Errors occurred, no packages were upgraded. Why is this happening? The package manager, pacman, has detected an unexpected file already exists on disk. By design it will not overwrite files that already exist. This is a design feature, not a flaw - package managers are desig…

Read through it and choose one of the ways described in order to proceed with the system update.

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@shiva

pacman-mirrors: error: unrecognized arguments: --fastrack

You got this error because the argument you specified for pacman-mirrors is not correct. The right one is --fasttrack.
See the Manjaro Wiki for more information about pacman-mirrors:

Pacman-mirrors