An error occurs when truffle migrate try to deploy Migrations.sol contract, i don't understand why
pragma solidity >=0.4.21 <0.6.0;
contract Migrations {
address public owner;
uint public last_completed_migration;
constructor() public {
owner = msg.sender;
}
modifier restricted() {
if (msg.sender == owner) _;
}
function setCompleted(uint completed) public restricted {
last_completed_migration = completed;
}
function upgrade(address new_address) public restricted {
Migrations upgraded = Migrations(new_address);
upgraded.setCompleted(last_completed_migration);
}
}
Migrations.sol
1_initial_migration.js
======================
Deploying 'Migrations'
----------------------
Error: Error: Error: *** Deployment Failed ***
"Migrations" hit an invalid opcode while deploying. Try:
* Verifying that your constructor params satisfy all assert conditions.
* Verifying your constructor code doesn't access an array out of bounds.
* Adding reason strings to your assert statements.
at Object.run (C:\Users\Sim'S\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-migrate\index.js:92:1)
at process._tickCallback (internal/process/next_tick.js:68:7)
Truffle v5.0.21 (core: 5.0.21)
Node v10.15.3
Error message
Best Answer
Just ran into the same error. I was running an older version of ganache-cli in this case and had to update ganache, so what helped was running
in my case.