Business Central Virtual Tables throwing 0x80040224 error

[virakones]

We use Business Central Virtual Tables for Dataverse with much success up until last week. Link.

However, we've recently not been able to lookup orders and have gotten a new error: 

Exception Message: Could not load type 'Microsoft.Crm.Sandbox.Service.KeyVaultClientFactory' from assembly 'Microsoft.Crm.Sandbox.Client, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.

Where can we begin looking to address this issue?

[bhssru]

We are seeing the same error, but not related to BC Virtual Tables. It is impacting our Flows and workflows on Dataverse tables.