Update app.py

app.py

@@ -15,11 +15,11 @@ from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline
 from weaviate.embedded import EmbeddedOptions
 
 # langchain imports
-from langchain.callbacks.tracers import ConsoleCallbackHandler
-from langchain.document_loaders import PyPDFLoader, TextLoader
+from langchain-community.callbacks.tracers import ConsoleCallbackHandler
+from langchain-community.document_loaders import PyPDFLoader, TextLoader
 from langchain_community.embeddings import OpenAIEmbeddings
-from langchain.prompts import PromptTemplate, ChatPromptTemplate
-from langchain.text_splitter import RecursiveCharacterTextSplitter
+from langchain-community.prompts import PromptTemplate, ChatPromptTemplate
+from langchain-community.text_splitter import RecursiveCharacterTextSplitter
 
 from langchain_community.vectorstores import MongoDBAtlasVectorSearch, Weaviate