Changed the import error to show missing module files (#2423)

* Fix issue #2421: Handle missing google.genai dependency gracefully

Co-Authored-By: Joe Moura <joao@crewai.com>

* Fix import sorting in test file

Co-Authored-By: Joe Moura <joao@crewai.com>

* Fix import sorting with ruff

Co-Authored-By: Joe Moura <joao@crewai.com>

* Removed unwatned test case

* Added dynamic catching for all the embedder function

* Dropped the comment

* Added test case

* Fixed Linting Issue

* Flaky test case in 3.13

* Test Case fixed

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Joe Moura <joao@crewai.com>
Co-authored-by: Lucas Gomide <lucaslg200@gmail.com>

src/crewai/rag/embeddings/configurator.py

@@ -38,7 +38,14 @@ class EmbeddingConfigurator:
                 f"Unsupported embedding provider: {provider}, supported providers: {list(self.embedding_functions.keys())}"
             )
 
-        embedding_function = self.embedding_functions[provider]
+        try:
+            embedding_function = self.embedding_functions[provider]
+        except ImportError as e:
+            missing_package = str(e).split()[-1]
+            raise ImportError( 
+                f"{missing_package} is not installed. Please install it with: pip install {missing_package}"
+            )
+
         return (
             embedding_function(config)
             if provider == "custom"

tests/utilities/test_embedding_configuration.py

@@ -0,0 +1,25 @@
+from unittest.mock import patch
+
+import pytest
+
+from crewai.rag.embeddings.configurator import EmbeddingConfigurator
+
+
+def test_configure_embedder_importerror():
+    configurator = EmbeddingConfigurator()
+    
+    embedder_config = {
+        'provider': 'openai',
+        'config': {
+            'model': 'text-embedding-ada-002',
+        }
+    }
+    
+    with patch('chromadb.utils.embedding_functions.openai_embedding_function.OpenAIEmbeddingFunction') as mock_openai:
+        mock_openai.side_effect = ImportError("Module not found.")
+        
+        with pytest.raises(ImportError) as exc_info:
+            configurator.configure_embedder(embedder_config)
+
+        assert str(exc_info.value) == "Module not found."
+        mock_openai.assert_called_once()