i need help. i cant figure out the issue
i am stuck in this for 2 weeks. im getting error:”The provided route does not match a valid Pinata endpoint” but cant figureout the problem. isk what else to do

import React, { useState } from "react";
import { ethers } from "ethers";
import { create } from "ipfs-http-client";
import BookStorageABI from "./BookStorageABI.json";
import { Buffer } from "buffer";

const pinataApiKey = "1a1f5873d314cb07889f";
const pinataSecretApiKey =
  "9861376b4e2082a7cfc349c9a9e8e42406b1da09c27f1c48732fe06dbb654e55";

const ipfs = create({
  host: "api.pinata.cloud",
  port: 443,
  protocol: "https",
  apiPath: "/pinning/v1/add",
  headers: {
    "Content-Type": "application/json",
    pinata_api_key: pinataApiKey,
    pinata_secret_api_key: pinataSecretApiKey,
  },
});

const contractAddress = "0x5C9aD105930c084088c744fB3D462E2171098A8a";

function App() {
  const [pdfFile, setPdfFile] = useState(null);
  const [ipfsHash, setIpfsHash] = useState("");
  const [storedIpfsHash, setStoredIpfsHash] = useState("");

  const handleFileChange = (e) => {
    setPdfFile(e.target.files[0]);
  };

  const handleUpload = async () => {
    if (!pdfFile) return;

    try {
      const pdfBuffer = await new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onload = () => resolve(Buffer.from(reader.result));
        reader.onerror = reject;
        reader.readAsArrayBuffer(pdfFile);
      });

      const formData = new FormData();
      formData.append(
        "file",
        new Blob([pdfBuffer], { type: "application/pdf" })
      );

      const response = await fetch(
        "https://api.pinata.cloud/pinning/v1/pinFile",
        {
          method: "POST",
          headers: {
            pinata_api_key: pinataApiKey,
            pinata_secret_api_key: pinataSecretApiKey,
            Authorization: `Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.lejJQi5mjhLVCO_pKq3SKteVgWz_4RjnKn-G4ZDQevg`,
          },
          body: formData,
        }
      );

      if (!response.ok) {
        const errorData = await response.json();
        console.error("Error uploading to IPFS:", errorData);
        throw new Error(`HTTP error status: ${response.status}`);
      }

      const { IpfsHash } = await response.json();
      setIpfsHash(IpfsHash);

      const provider = new ethers.providers.AlchemyProvider(
        "sepolia",
        "kKv4hFRw45Rax8LFzQs3xMtkZUjiNQZX"
      );
      const signer = provider.getSigner();
      const contract = new ethers.Contract(
        contractAddress,
        BookStorageABI,
        signer
      );

      const tx = await contract.storeBookCID(IpfsHash);
      await tx.wait();

      alert("PDF uploaded and CID stored in smart contract");
    } catch (error) {
      console.error("Error uploading to IPFS:", error);
      alert(
        "Failed to upload PDF to IPFS. Please check the console for more details."
      );
    }
  };

  const handleRetrieve = async () => {
    try {
      const provider = new ethers.providers.AlchemyProvider(
        "sepolia",
        "kKv4hFRw45Rax8LFzQs3xMtkZUjiNQZX"
      );
      const signer = provider.getSigner();
      const contract = new ethers.Contract(
        contractAddress,
        BookStorageABI,
        signer
      );
      const hash = await contract.getBookCID(await signer.getAddress());
      setStoredIpfsHash(hash);
    } catch (error) {
      console.error("Error retrieving CID:", error);
      alert(
        "Failed to retrieve CID. Please check the console for more details."
      );
    }
  };

  const handleDownload = async () => {
    if (!storedIpfsHash) return;

    try {
      const response = await fetch(
        `https://gateway.pinata.cloud/ipfs/${storedIpfsHash}`
      );
      if (!response.ok) {
        throw new Error(`HTTP error status: ${response.status}`);
      }
      const blob = await response.blob();
      const url = window.URL.createObjectURL(blob);
      const a = document.createElement("a");
      a.href = url;
      a.download = "downloaded_book.pdf";
      document.body.appendChild(a);
      a.click();
      a.remove();
    } catch (error) {
      console.error("Error downloading PDF:", error);
      alert(
        "Failed to download PDF. Please check the console for more details."
      );
    }
  };

  return (
    <div className="App">
      <h1>Upload and Download PDF via IPFS and Smart Contract</h1>
      <input type="file" onChange={handleFileChange} />
      <button onClick={handleUpload}>Upload PDF</button>
      <button onClick={handleRetrieve}>Retrieve PDF CID</button>
      <button onClick={handleDownload}>Download PDF</button>
      <p>IPFS Hash: {ipfsHash}</p>
      <p>Stored IPFS Hash: {storedIpfsHash}</p>
    </div>
  );
}

export default App;

i used solidity contract for it and ist address is also given…………………………………