fix

src/app/services/task.service.ts

@@ -109,6 +109,9 @@ export class TaskService {
   }
 
   overdueTask(isoDateString:string) {
+    if(!isoDateString) {
+      return false
+    }
     return (new Date()).getTime()  > (new Date(isoDateString)).getTime()
   }
 
@@ -132,7 +135,9 @@ export class TaskService {
     } else if (attribute == 'Não lidos') {
       return !(item.TaskStatus == 'Open' || item.taskStatus == 'Open')
     } else if (attribute == 'OverdueTasks') {
+
       return this.overdueTask(item.Deadline || item.deadline)
+      
     }
     return true
   }