How to fix 431 Request Header Fields Too Large in React-Redux app

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I had faced the same issue in my Angular Application. After spending a lot of time, I had found out that the issue is related with Node JS. We were using Node JS v12.x.x, and in this version, max-http-header-size reduced to 8KB from 80KB. And the auth token which I had was of around 10KB. That’s why, when I reload the app, browser starts giving ‘431 request header fields too large’ error for some of the files. I had updated the Node JS v14.x.x and it starts working again because in v14.0.0, max-http-header-size has been increased to 16KB.

Hope it will be helpful.

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