langchain - can't find import when doing: npm run build

- info Linting and checking validity of types ..Failed to compile.

./convex/util/pineconeUtil.ts:4:28
Type error: Cannot find module 'langchain/document_loaders' or its corresponding type declarations.

  2 | 
  3 | import { PineconeClient } from "@pinecone-database/pinecone";
> 4 | import { TextLoader } from "langchain/document_loaders";
    |                            ^
  5 | import { OpenAIEmbeddings } from "langchain/embeddings";
  6 | import { Blob } from "buffer";
  7 | import { RecursiveCharacterTextSplitter } from "langchain/text_splitter";