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contract Test
{

   uint public x=21;
   uint age=10;
   
   // constructor()
   // {
   //    x=0;
   // }

   constructor(uint new_x)
   {
      x=new_x;
   }
}
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  • Hello, given the error, the problem isn't in the solidity file but in the way you deployed the contract. Make sure to not leave empty the value of new_x when you're deploying (in Remix, it's in the box right of the "Deploy" button)
    – 0xSanson
    Commented Jan 22, 2023 at 12:06

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contract.deploy(BigInt(new_x)) should cover your issue.

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