updated some LC imports due to 'deprecated methods' warning

example.env

@@ -10,4 +10,5 @@ SERPAPI_API_KEY=
 # for chromadb
 VECTOR_DATABASE_LOCATION=
 
+# Name for the Conversation Memory Collection
 CONVERSATION_COLLECTION_NAME="ConversationMemory"

hf_mixtral_agent.py

@@ -11,7 +11,7 @@ from innovation_pathfinder_ai.structured_tools.structured_tools import (
     arxiv_search, get_arxiv_paper, google_search, wikipedia_search
 )
 
-from langchain import PromptTemplate
+from langchain.prompts import PromptTemplate
 from innovation_pathfinder_ai.templates.react_json_with_memory import template_system
 from innovation_pathfinder_ai.utils import logger
 

innovation_pathfinder_ai/vector_store/chroma_vector_store.py

@@ -15,7 +15,7 @@ from langchain_text_splitters import MarkdownHeaderTextSplitter
 from langchain_text_splitters import RecursiveCharacterTextSplitter
 
 from langchain_core.documents import Document
-from langchain.document_loaders import PyPDFLoader
+from langchain_community.document_loaders import PyPDFLoader
 from langchain_community.vectorstores import Chroma
 
 from langchain_community.embeddings.sentence_transformer import (