我得到的问题是每次我尝试任何代码，我得到这个错误：
“文件路径”中没有导出HTTP方法。为每个HTTP方法导出命名导出。
下面是我的route.ts文件：

import type { NextApiRequest, NextApiResponse } from 'next';

const apiKey = "";

// Requires "axios" and "form-data" to be installed (see https://www.npmjs.com/package/axios and https://www.npmjs.com/package/form-data)
const axios = require('axios');
const FormData = require('form-data');
const fs = require('fs');
const path = require('path');

const inputPath = 'public/CodeGeneration.jpg';
const formData = new FormData();
formData.append('size', 'auto');
formData.append('image_file', fs.createReadStream(inputPath), path.basename(inputPath));

axios({
  method: 'post',
  url: 'https://api.remove.bg/v1.0/removebg',
  data: formData,
  responseType: 'arraybuffer',
  headers: {
    ...formData.getHeaders(),
    'X-Api-Key': apiKey,
  },
  encoding: null
})
.then((response: any) => {
  if(response.status != 200) return console.error('Error:', response.status, response.statusText);
  fs.writeFileSync("no-bg.png", response.data);
})
.catch((error: any) => {
    return console.error('Request failed:', error);
});

这是我的page.tsx文件：

"use client";
import { useState } from 'react';

const BackgroundRemovalPage = () => {
  const [file, setFile] = useState<File | null>(null);
  const [loading, setLoading] = useState(false);
  const [resultPath, setResultPath] = useState<string | null>(null);

  const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
    if (event.target.files && event.target.files.length > 0) {
      setFile(event.target.files[0]);
    } else {
      console.warn('No files selected');
    }
  };

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

    setLoading(true);

    const formData = new FormData();
    formData.append('size', 'auto');
    formData.append('image_file', file);

    try {
      const response = await fetch('/api/backgroundRemover', {
        method: 'POST',
        body: formData,
      });

      if (response.ok) {
        const data = await response.json();
        setResultPath(data.path);
      } else {
        console.error('Upload failed:', response.statusText);
      }
    } catch (error) {
      console.error('Error:', error);
    } finally {
      setLoading(false);
    }
  };

  return (
    <div>
      <input type="file" accept="image/*" onChange={handleFileChange} />
      <button onClick={handleUpload} disabled={!file || loading}>
        {loading ? 'Processing...' : 'Remove Background'}
      </button>
      {resultPath && <img src={resultPath} alt="Result" />}
    </div>
  );
};

export default BackgroundRemovalPage;

我试过使用不同的API，试过创建组件并调用它们，试过让ChatGPT为我重写它，看看是否能发现任何问题。
不知道是什么引起的。