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I am following a YouTube tutorial and I have the following contract (in Remix):

 // SPDX-License-Identifier: MIT
 pragma solidity >= 0.6.0 < 0.9.0;
 import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
        
 contract FundMe {
            mapping(address => uint256) public addressToAmountFunded; 
        }

The import part is in red and has the following error:

"@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol:2:1: ParserError: Source file requires different compiler version (current compiler is 0.6.0+commit.26b70077.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version
pragma solidity ^0.8.0;
^---------------------^
.deps/npm/@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol
@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol
SourceUnit
@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol 1:0"

1 Answer 1

1

Try this:

replace

pragma solidity >= 0.6.0 < 0.9.0;

with

pragma solidity ^0.8.0;

NOTE: You can change the compiler version in remix (So you use 0.8.0)

Here is the screenshot of where to change compiler versionswitch compiler version

6
  • Hello, I replaced with pragma solidity ^0.8.0; and I go the error contracts/FundMe.sol:2:1: ParserError: Source file requires different compiler version (current compiler is 0.6.0+commit.26b70077.Emscripten.clang - note that nightly builds are considered to be strictly less than the released version pragma solidity = 0.8.0; ^----------------------^ PragmaDirective contracts/FundMe.sol 1:0
    – DJ Quimoso
    Nov 17, 2022 at 9:35
  • How do you change the compiler version?
    – DJ Quimoso
    Nov 17, 2022 at 10:35
  • @DJQuimoso I added a screenshot that shows how to change the compiler versions in Remix
    – Sky
    Nov 17, 2022 at 10:57
  • @DJQuimoso could you please accept and upvote the answer then? Much appreciated.
    – Sky
    Nov 17, 2022 at 18:49
  • 1
    When I try to upvote I get the error "Thanks for the feedback! You need at least 15 reputation to cast a vote, but your feedback has been recorded."
    – DJ Quimoso
    Nov 18, 2022 at 15:13

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