Update changes

requirements.txt

@@ -6,4 +6,6 @@ langchain-chroma
 gradio
 openai
 pydantic
-duckduckgo-search
+duckduckgo-search
+python-dotenv
+pdfplumber

utils/document_loader.py

@@ -1,13 +1,9 @@
 import os
 from langchain_community.document_loaders import PDFPlumberLoader
 
-def load_pdf(directory):
-    
-    for file in os.listdir(directory):
-        file_path = os.path.join(directory,file)
-        loader = PDFPlumberLoader(file_path)
-        document = loader.load()
-
+def load_pdf(file_path):
+    loader = PDFPlumberLoader(file_path)
+    document = loader.load()
     return document
 
 def create_unique_ids(documents):