Unable to import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol" on Remix

when import the IERC20.sol, sth wrong happened.

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/SafeERC20.sol";
import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/IERC20.sol";
Unable to import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol": File not found

pls, how to deal with it.thx.

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I think you should run

npm install @openzeppelin/contracts

to install the package to use.

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thx.
I’m using Remix. I installed but it didn’t work.

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If you use remix, I think it will be ok like what you said:

import “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/SafeERC20.sol 1”;
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this worked.but another problem occur:(.

Unable to import “undefined”: Not Found

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If you run on the remix, this will be ok:

import “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/SafeERC20.sol 1”;
import “https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/IERC20.sol 1”;

And if you run your code locally, such as:

import @openzeppelin/contracts/token/ERC20/SafeERC20.sol

you should install the package.

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yes, run on the remix, and cp ur code, but still:

Unable to import “undefined”: Not Found

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Hi @franklee00,

Welcome to the community :wave:

I suggest looking at the following examples which import OpenZeppelin Contracts via GitHub as @Skyge was showing you:

Hi @franklee00,

If you are still having issues, can you share your contract that you are attempting to deploy?

:warning: Note: You should only use code published in an official release of OpenZeppelin Contracts, the latest release is 3.3. When importing via GitHub on Remix you can specify the release tag, (otherwise you will get the latest code in the master branch).

thx a lot.
It’s solved by importing the files in Remix directly.

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