refactor: Migrate HuggingFaceEmbeddings import to langchain_huggingface package.

app.py

@@ -1,5 +1,5 @@
 import gradio as gr
-from langchain.embeddings import HuggingFaceEmbeddings
+from langchain_huggingface import HuggingFaceEmbeddings
 from langchain_chroma import Chroma
 from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
 import torch

data_cutter.py

@@ -2,7 +2,7 @@ import os
 import pdfplumber
 from langchain.schema import Document
 from langchain_text_splitters import RecursiveCharacterTextSplitter
-from langchain.embeddings import HuggingFaceEmbeddings
+from langchain_huggingface import HuggingFaceEmbeddings
 from langchain_chroma import Chroma
 import shutil
 

requirements.txt

@@ -2,6 +2,7 @@ pdfplumber
 langchain
 langchain-chroma
 langchain-text-splitters
+langchain-huggingface
 sentence-transformers
 transformers
 torch