Symbol lookup error: cardano-node: undefined symbol: crypto_vrf_publickeybytes

I am trying to install the cardano node in my local. But i am getting this error .
symbol lookup error: cardano-node: undefined symbol: crypto_vrf_publickeybytes
I have asked the question in detail here.
https://cardano.stackexchange.com/questions/8084/symbol-lookup-error-cardano-node-undefined-symbol-crypto-vrf-publickeybytes
I got an answer too which is saying me to do the following.

Once solution is to add the following to cabal.project.local :

package cardano-crypto-praos
  flags: -external-libsodium-vrf

I am not sure what to do with this is there anyone here who can help me to solve this?

Check these topics

https://forum.cardano.org/search?context=topic&context_id=100671&q=crypto%20vrf%20publickeybytes&skip_context=true