Update api.py

api.py

@@ -11,7 +11,7 @@ from langchain.document_loaders import TextLoader  # Or a custom loader for .doc
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_google_genai import GoogleGenerativeAIEmbeddings
 from langchain.vectorstores import FAISS
-from langchain.vectorstores import Chroma
+from langchain_chroma import Chroma
 from langchain.chains import RetrievalQA
 from langchain_google_genai import ChatGoogleGenerativeAI # Import the GoogleGenerativeAI class
 from langchain.prompts import PromptTemplate