我正在尝试连接到localhost：5000上的API，当从 Postman 或浏览器调用时，它可以完美地工作，但当在nextjs getserverside props内部调用时，它不工作：

mport { useEffect,useState } from "react";
 import { GetStaticProps, GetStaticPaths, GetServerSideProps } from 'next'
 import Axios, {AxiosResponse} from 'axios'
interface Data{
    labels: string[],
    series:number[][]
}
function Chart(props) {
const [data,setData]= useState<Data>()
    useEffect(()=>{
        console.log(props)
 let fetchedData = {
    labels: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri'],
    series: [
     [6,5,3,2,1]
    ]
  }
  
  setData(fetchedData)
    },[])
    
      
       new Chartist.Line('.ct-chart', data);
      useEffect(() => {
        setTimeout(() => {
          /* do stuff */
        }, );
      }, []);
    return (
        <>
        <div className="ibox ">
        <div className="ibox-title">
            <h5>Simple line chart
            </h5>
        </div>
        <div className="ct-chart ct-perfect-fourth"></div>
    </div>
        </>
        
    )
  }
  

  export const getServerSideProps: GetServerSideProps = async (context) =>{try {
    const res = await Axios.get("http://localhost:5000/api/charts/2")
  
   let data= await res.data;
    return { props: { data } }
    } catch (err) {
    console.log(err)
    }}
     
export default Chart

并返回以下错误：

port: 5000,
  address: '::1',
  syscall: 'connect',
  code: 'ECONNREFUSED',
  errno: -4078,
  path: '/api/charts/2',
  _currentUrl: 'http://localhost:5000/api/charts/2',

我看不出有什么理由它不起作用，特别是它在 Postman 身上起作用