As per the documentation at: plannerTask resource type, sample response for planner task will be like:
{
"activeChecklistItemCount": 1024,
"appliedCategories": {"@odata.type": "microsoft.graph.plannerAppliedCategories"},
"assigneePriority": "String",
"assignments": {"@odata.type": "microsoft.graph.plannerAssignments"},
"bucketId": "String",
"checklistItemCount": 1024,
"completedBy": {"@odata.type": "microsoft.graph.identitySet"},
"completedDateTime": "String (timestamp)",
"conversationThreadId": "String",
"createdBy": {"@odata.type": "microsoft.graph.identitySet"},
"createdDateTime": "String (timestamp)",
"dueDateTime": "String (timestamp)",
"hasDescription": true,
"id": "String (identifier)",
"orderHint": "String",
"percentComplete": 1024,
"planId": "String",
"previewType": "String",
"referenceCount": 1024,
"startDateTime": "String (timestamp)",
"title": "String"
}
Which has title
in it. Also, I tried it using Graph explorer and I am able to see the title
of planner task like:
So, my guess the issue is with your data type of messages
array you mentioned: MicrosoftGraph.Message()
.
Check the correct data type of planner task (from Microsoft graph library) and use it OR
Create a props with the required properties you need from planner task and use it like given at: SPFx sample – personalTasks