This is a common error when using a Prisma transaction with slightly heavy data. There is a default timeout for the Prisma transaction, but you can custom-set the timeout to suit your case, as shown below. The issue is happening because the time needed for the transaction is taking more time than the default time.

Update the transaction as follow:

    await this.prisma.$transaction(
  async (db) => {
    const caseFile = await this.findOneByLeadId(leadIdentifier);

    if (caseFile) {
      const { caseIdentifier } = caseFile;

      const update = { ...caseFile, notes };
      await db.case_file.update({
        where: { case_file_guid: caseIdentifier },
        data: {
          note_text: notes,
        },
      });

      await createNotesAction(db, caseIdentifier);
    } else {
      throw new Error("Case file not found");
    }
  },
  {
    maxWait: 5000, // 5 seconds max wait to connect to prisma
    timeout: 20000, // 20 seconds
  }
);