This was found in a server log. The exception should be more secriptive or better yet avoided.
2023-11-13 16:28:50,664 [166] ERROR Origam.Server.Controller.AbstractController - Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at Origam.Server.SessionStore.GetChanges(DataRow row) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 1612
at Origam.Server.SessionStore.UpdateObject(String entity, Object id, String property, Object newValue) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 1592
at Origam.Server.SaveableSessionStore.UpdateObjectWithDependenies(String entity, Object id, String property, Object newValue, Boolean isTopLevel) in D:\a\1\s\backend\Origam.Server\Session Stores\SaveableSessionStore.cs:line 274
at Origam.Server.SaveableSessionStore.UpdateObject(String entity, Object id, String property, Object newValue) in D:\a\1\s\backend\Origam.Server\Session Stores\SaveableSessionStore.cs:line 234
at Origam.Server.SessionStore.UpdateObjectBatch(String entity, UpdateData[] updateDataArray) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 2216
at Origam.Server.ServerCoreUIService.UpdateObject(UpdateObjectInput input) in D:\a\1\s\backend\Origam.Server\ServerCoreUIService.cs:line 371
at Origam.Server.Controller.UIServiceController.<>c__DisplayClass22_0.<UpdateObject>b__0() in D:\a\1\s\backend\Origam.Server\Controller\UIServiceController.cs:line 221
at Origam.Server.Controller.AbstractController.RunWithErrorHandler(Func`1 func) in D:\a\1\s\backend\Origam.Server\Controller\AbstractController.cs:line 120