[Database] Appwrite Cloud: Relationships returns null

I'm using flutter and while fetching documents from db I'm getting following: I/flutter (29189): {vehicle_code: MC, plate: 34A1234, verifiedVehicle: false, $id: 6607cf431e195895e8be, $createdAt: 2024-03-30T08:37:23.154+00:00, $updatedAt: 2024-03-30T08:37:23.154+00:00, $permissions: [], ownerCompany: null, driver: null, $databaseId: 65bf80f96118726797c8, $collectionId: 660466b547cf578575e1}

as you can see "ownerCompany" and "driver" seems null. But they are not.

Maybe problem occures due to relationships. But Its nonsense. Because related documents are not null too.

problem solved. All related collections must have same permissions to see