diff --git a/src/Morphir/Elm/Frontend/Codec.elm b/src/Morphir/Elm/Frontend/Codec.elm
index fef5f26f8..9e34c3529 100644
--- a/src/Morphir/Elm/Frontend/Codec.elm
+++ b/src/Morphir/Elm/Frontend/Codec.elm
@@ -59,6 +59,7 @@ import Morphir.Elm.Frontend exposing (ContentLocation, ContentRange, Error(..),
 import Morphir.Elm.Frontend.Resolve as Resolve
 import Morphir.IR.Name.Codec exposing (encodeName)
 import Morphir.IR.Path as Path
+import Morphir.IR.Path.Codec exposing (encodePath)
 import Morphir.JsonExtra as JsonExtra
 import Morphir.Type.Infer.Codec as InferCodec
 import Parser exposing (DeadEnd)
@@ -171,6 +172,11 @@ encodeError error =
                 , InferCodec.encodeTypeError typeError
                 ]
 
+        ExposedModuleNotFound path ->
+            JsonExtra.encodeConstructor "ExposedModuleNotFound"
+                [ encodePath path
+                ]
+
 
 {-| Encode ContentLocation.
 -}