Charts cannot be load/ credentials pop-up

Org chart, employee chart don't load, credentials pop up when trying to request absences

Error appears in Event Viewer

Thread was being aborted.--   at System.Linq.Enumerable.WhereListIterator`1.Select[TResult](Func`2 selector)    at Lanteria.EffectiveStaff2010.BL.BLOrgStructure.GetParentDepartmentsChainWithCurrent(Int32 depId, List`1 allDepartments)

​Some Org Units/Employees/ are n loop.

See details in All Site Content -> Site Pages -> General -> Diognostic.