CODEWITHSUNDEEP
reactjsasynchronouspostaxiosnext.js
Anik Deb Nath
Anik Deb Nath

Reputation: 27

[ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client in nextjs

error - Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client at new NodeError (internal/errors.js:322:7) at ServerResponse.setHeader (_http_outgoing.js:561:11) at NodeNextResponse.setHeader (E:\EndGame\FoodMart-client-side\node_modules\next\dist\server\base-http.js:101:19) at DevServer.renderError (E:\EndGame\FoodMart-client-side\node_modules\next\dist\server\base-server.js:1094:17) at DevServer.renderError (E:\EndGame\FoodMart-client-side\node_modules\next\dist\server\next-server.js:414:22) at DevServer.run (E:\EndGame\FoodMart-client-side\node_modules\next\dist\server\dev\next-dev-server.js:451:35) at processTicksAndRejections (internal/process/task_queues.js:95:5) at async DevServer.handleRequest (E:\EndGame\FoodMart-client-side\node_modules\next\dist\server\base-server.js:305:20) { code: 'ERR_HTTP_HEADERS_SENT' }enter image description here

i can not understand from where the erron come in terminal but live site is okk.

Upvotes: 1

Views: 4883

Answers (2)

Aindriú
Aindriú

Reputation: 3730

In your Next.js application, check your pages/api/preview.js file. There is some code there that needs to be correct before the redirect will work

  export default function handler(req, res) {
  res.setPreviewData({}) 
  res.redirect(req.query.redirect)
}

if you have something like the following your code won't work

 res.end('Preview mode enabled')

Upvotes: 1

Pasca Marius
Pasca Marius

Reputation: 111

I think you are using express. Somewhere in the code, you send the response after another response is sent. Make sure that you return the function after you call a res.send. All your res.send should have a return: return rsp.send({});

Upvotes: 0

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