File share \{1}\{0} already exists, however directory '{2}' is different from witness directory '{3}'. Until this problem ...

File share \\{1}\{0} already exists, however directory '{2}' is different from witness directory '{3}'. Until this problem is corrected, the database availability group may have increased vulnerability to failures. To correct this problem, delete existing the file share and use the Set-DatabaseAvailabilityGroup cmdlet to retry the operation.