Error Occurred while changing compiler version

Hi all,
below is my contract with compiler version >=0.6.0.

when I change the compiler version ^0.8.2 i am getting error as:

Return argument type address is not implicitly convertible to expected type (type of first return variable) address payable.

pragma solidity >=0.6.0;


abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return   msg.sender;
    }
    

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

can anyone help me to sort out this issue?

Hi there,

When updating your compiler version, you should check to see if Open Zeppelin has created an updated version of the contract.

In this case, use the newest version of Context.sol at

That should fix the issue.

1 Like

Thanks for the response @Tsushima_Yoshiko,
I have another doubt " Is proxy contract compiler version and Implementation contract compiler version should be same? "

can I use the below combination in Binance smart chain?
proxy contract compiler version ^0.8.4 ,
Implementation contract compiler version >=0.6.12

Proxy and implementation contracts can be compiled with different Solidity versions

1 Like