The following information may help to resolve the situation:
The following packages have unmet dependencies:
vyos-1x : Depends: fuse-overlayfs but it is not going to be installed
Depends: vyatta-cfg but it is not installable
vyos-world : Depends: vyatta-cfg-system but it is not going to be installed
Depends: vyatta-op but it is not going to be installed
Depends: vyatta-cfg but it is not installable
Depends: vyatta-cluster but it is not going to be installed
Depends: vyatta-wanloadbalance but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
E: An unexpected failure occurred, exiting…
P: Begin unmounting filesystems…
P: Saving caches…