Error message: Could not connect to manager. Cause: Protocol version mismatch.
Figure 1. Protocol Version Mismatch

This error occurs when the LaMa adapter is incompatible with the VLA server. This may happen after deploying a new VLA appliance or installing the adapter from the appliance, whereas the IP address of an old appliance is mistakenly specified instead of the new one. Another reason, following deployment of a new VLA appliance, could be simply forgetting that a new adapter has been installed. To fix this issue, you need to upgrade /deploy the VLA server correspondingly.