Problems replacing Disk

Hi, Pretty new at this

I tried to replace a disk as it showed as "FAULTED". As the system is hot swapped, I marked the disk OFFLINE and replaced it with a new one. Then a marked it as "REPLACE". This is what it shows now - I don't have a clue what happened - see attached image.




My zpool status returns this:


[root@freenas2 ~]# zpool status
pool: MAIN...

Problems replacing Disk