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:~workspace/myproject$truffle migrate --reset

Compiling your contracts...

Everything is up to date, there is nothing to compile.

Running migration: 1_initial_migration.js Replacing Migrations... Migrations: 0xA501AfD7d6432718daF4458Cfae8590d88de818E Saving successful migration to network... Saving artifacts... Running migration: 2_deploy_simplestorage.js Deploying SimpleStorage... Error encountered, bailing. Network state unknown. Review successful transactions manually. Error: Invalid number of parameters for "undefined". Got 2 expected 1! at Object.InvalidNumberOfParams (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3-eth-contract/~/web3-core-helpers/src/errors.js:32:1) at Object._createTxObject (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3-eth-contract/src/index.js:699:1) at Contract.deploy (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3-eth-contract/src/index.js:504:1) at Function.deploy (/usr/local/lib/node_modules/truffle/build/webpack:/packages/truffle-contract/lib/execute.js:214:1) at constructor.detectNetwork.then.network (/usr/local/lib/node_modules/truffle/build/webpack:/packages/truffle-contract/lib/contract/constructorMethods.js:56:1) at at process._tickCallback (internal/process/next_tick.js:189:7) Truffle v5.0.12 (core: 5.0.12) Node v8.16.0

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You didn't paste the script you're using for the deployment, however from the error it looks like you're passing two parameters to the simple_storage contract constructor whereas it only expects one (the value to initialise the storage value to).

Here is a copy from my environment:

// Pass 42 to the contract as the first constructor parameter
deployer.deploy(simple_storage, 42, {privateFor: ["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]})

If you are passing the correct number of parameters then try deleting the contents of the 'build' directory and redeploying.

  • Thanks for your reply, the problem was due to use of privateFor, I got it right after upgrading to latest version of Truffle seeing your answer to another question – Hit Vardhan Jun 4 at 6:37

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