Migrator for Notes to Exchange returns an error at mailbox migration:
ERROR: [0-239-10-80131537] System.UriFormatException: Invalid URI: The URI is empty.
ERROR: [4072-25-4-00000000]Unable to open target mail store
N/A
Remove the license from the mailbox with issue
Wait 30 minutes
Assign Exchange Online license again
Wait 30 minutes
Re-try the migration
