Modify Event query string report error "Cannot read properties of undefined (reading 'regarding.apiVersion'):

Step to Reproduce:
1) Navigate to Home->Events. Select namespace is openshift-cluster-observability-operator.
2) Click the Focus button.
The Graphic can be displayed, the query is 'k8s:Event.v1.events.k8s.io:

'
2) Modify the query to k8s:Event.v1.events.k8s.io:

Actual Result

TroubleShoot Panel report error 'Cannot read properties of undefined (reading 'regarding.apiVersion'.

Expected Result

We can query 'k8s:Event.v1.events.k8s.io:

'