fix import (#4003)

langchain/indexes/vectorstore.py

@@ -9,7 +9,7 @@ from langchain.embeddings.base import Embeddings
 from langchain.embeddings.openai import OpenAIEmbeddings
 from langchain.llms.base import BaseLLM
 from langchain.llms.openai import OpenAI
-from langchain.schemas import Document
+from langchain.schema import Document
 from langchain.text_splitter import RecursiveCharacterTextSplitter, TextSplitter
 from langchain.vectorstores.base import VectorStore
 from langchain.vectorstores.chroma import Chroma

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langchain"
-version = "0.0.155"
+version = "0.0.156"
 description = "Building applications with LLMs through composability"
 authors = []
 license = "MIT"