Deleting user from Fedora - error

A Mate now MIA - crated a test Samba on Fedora for me.
One of the shares refers to @public (everyone is a member of this as its a public viewable folder)
Ive pasted a copy of passwd file  below this

Error message.
 
I couldn't find the numerical ID of the user 'guest4'.
In most cases this is caused by inconsistencies in the user or group database, e.g. between the files /etc/passwd, /etc/group and their respective shadow files /etc/shadow and /etc/gshadow. I will try to ignore these entries and continue for now, but please fix these inconsistencies as soon as possible

========= passwd
annek:x:502:520::/home/annek:/bin/bash
tommyd:x:503:520::/home/tommyd:/bin/bash
backup:x:504:520::/home/backup:/bin/bash
anno:x:505:520::/home/anno:/bin/bash
audreyo:x:506:520::/home/audreyo:/bin/bash
teresah:x:507:520::/home/teresah:/bin/bash
aislingb:x:508:520::/home/aislingb:/bin/bash
annl:x:509:520::/home/annl:/bin/bash
brendand:x:510:520::/home/brendand:/bin/bash
edied:x:511:520::/home/edied:/bin/bash
gerryf:x:512:520::/home/gerryf:/bin/bash
grahamr:x:513:520::/home/grahamr:/bin/bash
mikeh:x:514:520::/home/mikeh:/bin/bash
moyrao:x:515:520::/home/moyrao:/bin/bash
phyllisc:x:516:520::/home/phyllisc:/bin/bash
tonyaf:x:517:520::/home/tonyaf:/bin/bash
guest1:x:518:520::/home/guest1:/bin/bash
guest2:x:519:520::/home/guest2:/bin/bash
guest3:x:520:523::/home/guest3:/bin/bash

I want to delete guest1 / 2/ /3 and Im struggling to get rid of guest4.
Ive removed guest 4 from this and saved.
Ive logged in/out as well.

What else to do? Will a reboot help?