Error: Truffle is currently using solc 0.5.8,

Question

i run migrate in the terminalbut it shows

Error: Truffle is currently using solc 0.5.8, but one or more of your contracts specify "pragma solidity ^0.4.27". Please update your truffle config or pragma statement(s).

then i follow the error and update config it doesn't work what should i do thx

Answer 1

On MacOS, change compiler settings in truffle-config.js. Also, make sure the pragma versions in your contracts are the same as in your config settings as you won't be able to run truffle compile successfully otherwise.

Answer 2

Inside of the truffle-config.js you can update the solc version like so:

compilers: {
  solc: {
    version: "^0.8.0"
  }
}

Here is a full example:

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 8545,
      network_id: "*" // Match any network id
    }
  },
  compilers: {
    solc: {
      version: "^0.8.0"
    }
  }
};