How to call external ERC20 token transfer function

Question

I am trying to transfer ERC20 token from another smart contract. For that I am following this article. So I wrote the smart contract as following,

pragma solidity >=0.4.23 <0.6.0;

interface IERC20 {
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}

contract SmartMatrix is IERC20 {
    IERC20 private _token;
    constructor(IERC20 token) public {
        _token = token;
    }
    function sendERC20TokeToDnividends(address sender, address recipient, uint256 amount) public returns (bool) {    
        _token.transferFrom(sender, recipient, amount);
        return true;
    }
}

But I am getting the following error while I try to deploy,

This contract may be abstract, not implement an abstract parent's methods completely or not invoke an inherited contract's constructor correctly.

But I remove interface It deploys successfully. For example, The following code works,

pragma solidity >=0.4.23 <0.6.0;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/release-v2.5.0/contracts/token/ERC20/IERC20.sol";

contract SmartMatrix is IERC20 {
    IERC20 private _token;
    constructor(IERC20 token) public {
        _token = token;
    }
    function sendERC20TokeToDnividends(address sender, address recipient, uint256 amount) public returns (bool) {    
        _token.transferFrom(sender, recipient, amount);
        return true;
    }
}

Please help me to fix this issue.

Edited: Removed inheritance and tried as the following and getting same error,

pragma solidity >=0.4.23 <0.6.0;

interface IERC20 {
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}

contract SmartMatrix {
    IERC20 private _token;
    constructor(IERC20 token) public {
        _token = token;
    }
    function sendERC20TokeToDnividends(address sender, address recipient, uint256 amount) public returns (bool) {    
        _token.transferFrom(sender, recipient, amount);
        return true;
    }
}

Answer 1

First of all remove the inheritance. Now replace your constructor with this one:

constructor(address token) public {
    _token = IERC20(token);
}

Now in the constructor you have to pass the address of the deployed IERC20 contract.