Update app.py

app.py

@@ -89,6 +89,9 @@ class DocumentRAG:
 
 
     def _get_embedding_model(self):
+        if not self.api_key:
+            raise ValueError("API Key not found. Make sure to set the 'OPENAI_API_KEY' environment variable.")
+
         if self.embedding_choice == "OpenAI":
             return OpenAIEmbeddings(api_key=self.api_key)
         else:
@@ -100,10 +103,6 @@ class DocumentRAG:
 
         
 
-        if not self.api_key:
-            raise ValueError("API Key not found. Make sure to set the 'OPENAI_API_KEY' environment variable.")
-
-
 
     def process_documents(self, uploaded_files):
         """Process uploaded files by saving them temporarily and extracting content."""