Expand vmdk in webclient could not complete task

When expand the vmdk from webclient, it breaks and error message could not complete.

Then the VM gets invalid in the inventory

Solution:

1. See what datastore the vm resides
2. Remove the invalid vm from inventory
3. Browse the datastore that the invalid vm resides
4. Add to inventory
5. Power it on
6. Works
7. Power Down
8. Expand the vmdk again
9. Power On
10. Worked