Exception:

Something went wrong. Refresh and try again.

Resolution:

Please make sure the Einstein Agent User have “Agentforce Service Agent User” Permission Set assigned.

1. Go to Salesforce Setup.
2. Search for Agents.
3. Select the Agent and open in Agent Builder.
4. Click Setting.
5. Check the Agent User assigned to the agent.
6. Assign “Agentforce Service Agent User” Permission Set to the Agent User to fix the error or exception.