diff --git a/lkml2cube/parser/explores.py b/lkml2cube/parser/explores.py
index 5c34b89..7ec5230 100644
--- a/lkml2cube/parser/explores.py
+++ b/lkml2cube/parser/explores.py
@@ -79,6 +79,9 @@ def generate_cube_joins(cube_def, lookml_model):
                         cube_def['cubes'].append(cube)
                     else:
                         cube = get_cube_from_cube_def(cube_def, cube_right)
+                        if not cube:
+                            typer.echo(f'Cube referenced in explores not found: {join_element["name"]}')
+                            continue
 
                     join_condition = join_element['sql_on']
 
diff --git a/pyproject.toml b/pyproject.toml
index eadc167..027e7ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 
 [project]
 name = "lkml2cube"
-version = "0.2.0"
+version = "0.2.1"
 description = "Looker ML to Cube converter"
 authors = [
     {name = "Paco Valdez", email = "paco@cube.dev"},