Update summarizer.py

summarizer.py

@@ -5,7 +5,9 @@ from langchain.chains.summarize import load_summarize_chain
 from pathlib import Path
 
 
-def summarize_file(method, file):
+def summarize_file(method, files):
+
+    file = files[0]
     # Initialize the LLM
     llm = Cohere(temperature=0)