Email sending not working: Error: connect EMFILE 34.255.83.252:443

[krupalimakadiya]

 Error: connect EMFILE 34.255.83.252:443 - Local (undefined:undefined)
    at internalConnect (node:net:1100:16)
    at defaultTriggerAsyncIdScope (node:internal/async_hooks:462:18)
    at GetAddrInfoReqWrap.emitLookup [as callback] (node:net:1381:9)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:109:8) {
  errno: -24,
  code: 'EMFILE',
  syscall: 'connect',
  address: '34.255.83.252',
  port: 443,
  config: {
    transitional: {
      silentJSONParsing: true,
      forcedJSONParsing: true,
      clarifyTimeoutError: false
    },
    adapter: [Function: httpAdapter],
    transformRequest: [ [Function: transformRequest] ],
    transformResponse: [ [Function: transformResponse] ],
    timeout: 0,
    xsrfCookieName: 'XSRF-TOKEN',
    xsrfHeaderName: 'X-XSRF-TOKEN',
    maxContentLength: Infinity,
    maxBodyLength: Infinity,
    validateStatus: [Function: validateStatus],
    headers: {
      Accept: 'application/json',
      'Content-Type': 'application/json',
      'User-Agent': 'sendgrid/7.7.0;nodejs',
      Authorization: 'Bearer xyz',
      'Content-Length': 21312
    },
    url: '/v3/mail/send',
    method: 'post',

I am sending 1000 record in each request and total i have 5000 records so 4 request get successfull but 1 is failed so if someone know how to resolve this error then that will be helpful for me