Having scalar with packed types result in location typechecking error

[PL-666]

data MovieTitle = Title Text 
data ReleaseData = RData (Int)  
data Director = Director Text 
data Writers = Writers (PList Text) 
data CastInfo = CastInfo (PList Text)
data MovieTags = MTags (PList Text)
data Rating = Rating Int
data Index = Idx Char
data MovieTrie =  End 
                | MTrie (IsMovie) (Char) (MovieTitle) (Director) (CastInfo) (MovieTags) (Rating)

compile command: gibbon --packed --toC movies.hs
Error message:

In the expression:
DataConE "loc_1489"
         "MTrie"
         [VarE "y_809_1057_1281",VarE "x_803_1051_1275",
          VarE "y_811_1059_1283",VarE "y_812_1060_1284",
          VarE "y_813_1061_1285",VarE "y_814_1062_1286",
          VarE "y_815_1063_1287"]
Locations: Var "loc_1720", Var "loc_1722"

CallStack (from HasCallStack):
In the expression:
DataConE "loc_1539"
         "MTrie"
         [VarE "y_823_1083_1319",VarE "x_817_1077_1313",
          VarE "y_825_1085_1321",VarE "y_826_1086_1322",
          VarE "y_827_1087_1323",VarE "y_828_1088_1324",
          VarE "y_829_1089_1325"]
Locations: Var "loc_1788", Var "loc_1790"

CallStack (from HasCallStack):
  error, called at src/Gibbon/L2/Typecheck.hs:948:23 in gibbon-0.2-inplace:Gibbon.L2.Typecheck