build/Generated/Types.hs:43:87: error:
    Not in scope: type constructor or class ‘Second’
    Perhaps you meant ‘Record’ (imported from IHP.ModelSupport)
   |
43 |         pure $ First id (QueryBuilder.filterWhere (#firstId, id) (QueryBuilder.query @Second)) def
   |                                                                                       ^^^^^^

build/Generated/Types.hs:56:58: error:
    Not in scope: type constructor or class ‘Second’
    Perhaps you meant one of these:
      type variable ‘second’ (line 56),
      ‘Record’ (imported from IHP.ModelSupport)
   |
56 | type instance Include "second" (First' second) = First' [Second]
   |                                                          ^^^^^^
Failed, three modules loaded.