A managed exception

Hallo, I want to add area loads to my wall elements, but Im getting a managed exception by python can anyone help me out.
cheers.

import sys
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

clr.AddReference('RevitAPI')
from Autodesk.Revit.DB.Structure import *
import Autodesk
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Analysis import *
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.GeometryConversion) 

clr.ImportExtensions(Revit.Elements)

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager



doc = DocumentManager.Instance.CurrentDBDocument

areaLoad = []
host = UnwrapElement(IN[0]) 
force = IN[1].ToXyz()
typee= UnwrapElement(IN[2])


TransactionManager.Instance.EnsureInTransaction(doc)

hostAnlytical = []
analyticalSurface = []
# getting the Analytial models of the walls.
for i in host:
    hostAnlytical.append(Element.GetAnalyticalModel(i))
    
areaLoad = AreaLoad.Create(doc, hostAnlytical, force, typee)
TransactionManager.Instance.TransactionTaskDone()

OUT = areaLoad