I am having issues accessing Assignment under Education using Microsoft Graphs API giving access denied even though we have gave all the required permissions. noticed that Under Application permission it requires one of the these permissions 
. But under API Permission > Application Permission we actually have (EduAssignments.ReadBasic.All, EduAssignments.ReadWriteBasic.All, EduAssignments.Read.All, EduAssignments.ReadWrite.All)
I am not sure whether this the issue here. Please advise . Thanks