How to clear this ZFS error?

[Dennis Glatting]

There was a system failure when I replaced the disk. How do I rid
myself of 15107145887069556078?

 




config:

	NAME                        STATE     READ WRITE CKSUM
	disk-2                      DEGRADED     0     0     0
	  raidz2-0                  DEGRADED     0     0     0
	    replacing-0             DEGRADED     0     0     0
	      da5                   ONLINE       0     0     0
	      15107145887069556078  OFFLINE      0     0     0
was /dev/da1.nop
	    da0                     ONLINE       0     0     0
	    da4                     ONLINE       0     0     0
	    da1                     ONLINE       0     0     0
	    da2                     ONLINE       0     0     0
	cache
	  ada3                      ONLINE       0     0     0

errors: No known data errors