Unreadable encoding text when querying vectors from LaTeX docs

I’m attempting to query vectors from a split LaTeX document along with their corresponding vectors. However, the returned matches contain text in the metadata field that is encoded in an unreadable format.

See the text field below:

            "id": "c2f70739-5f75-4805-972c-e44236108c45",
            "score": 0.754803538,
            "values": [],
            "metadata": {
                "loc.lines.from": 31789,
                "loc.lines.to": 31789,
                "text":"��1�WF�� �d�D��:&c�=d��E���œj�\u000b��#\"Kd�F�$Z����M���!�\f��h��e"

Sample input using PineconeStore.fromDocuments in langchain.js

Document {
    pageContent: 'References}\n' +
      '[1] W. Dai, "b-money," \\href{http://www.weidai.com/bmoney.txt}{http://www.weidai.com/bmoney.txt}, 1998.\n' +
      '\n' +
      '[2] H. Massias, X.S. Avila, and J.-J. Quisquater, "Design of a secure timestamping service with minimal trust requirements," In 20th Symposium on Information Theory in the Benelux, May 1999.\n' +
      '\n' +
      '[3] S. Haber, W.S. Stornetta, "How to time-stamp a digital document," In Journal of Cryptology, vol 3, no 2, pages \\(99-111,1991\\).\n' +
      '\n' +
      '[4] D. Bayer, S. Haber, W.S. Stornetta, "Improving the efficiency and reliability of digital time-stamping," In Sequences II: Methods in Communication, Security and Computer Science, pages 329-334, 1993.\n' +
      '\n' +
      '[5] S. Haber, W.S. Stornetta, "Secure names for bit-strings," In Proceedings of the 4th ACM Conference on Computer and Communications Security, pages 28-35, April 1997.\n' +
      '\n' +
      '[6] A. Back, "Hashcash - a denial of service counter-measure," \\href{http://www.hashcash.org/papers/hashcash.pdf}{http://www.hashcash.org/papers/hashcash.pdf}, 2002.\n' +
      '\n' +
      '[7] R.C. Merkle, "Protocols for public key cryptosystems," In Proc. 1980 Symposium on Security and Privacy, IEEE Computer Society, pages 122-133, April',
    metadata: { loc: [Object] }