adding online PDF loader

app.py

@@ -1,7 +1,7 @@
 import os 
 import gradio as gr
 
-from langchain.document_loaders import PDFMinerLoader,CSVLoader ,UnstructuredWordDocumentLoader,TextLoader
+from langchain.document_loaders import PDFMinerLoader,CSVLoader ,UnstructuredWordDocumentLoader,TextLoader,OnlinePDFLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.embeddings import SentenceTransformerEmbeddings
 from langchain.vectorstores import FAISS
@@ -91,7 +91,7 @@ def process_word_document(document_file_name):
 
 
 def process_pdf_document(document_file_name):
-    loader = PDFMinerLoader(document_file_name)
+    loader = OnlinePDFLoader(document_file_name)
     document = loader.load()[0]
     return document
 
@@ -125,8 +125,8 @@ with gr.Blocks(css=css) as demo:
                 with gr.Box():
                     pdf_doc = gr.File(label="Upload File to start QA", file_types=FILE_EXT, type="file")
                     with gr.Row():
-                        load_pdf = gr.Button("Load file to langchain")
                         langchain_status = gr.Textbox(label="Status", placeholder="", interactive=True)
+                        load_pdf = gr.Button("Upload file and generate Embeddings",).style(full_width=False)
         
         chatbot = gr.Chatbot()
         question = gr.Textbox(label="Question", placeholder="Type your question and hit Enter")