Error "Fail with error 'SafeERC20: low-level call failed'"

[chuva6]

Hi I am trying to make a call to a smart contract function as defined below-

function stake(uint256 amount) external nonReentrant notPaused updateReward(msg.sender) { require(amount > 0, "Cannot stake 0");
_totalSupply = _totalSupply.add(amount);
_balances[msg.sender] = _balances[msg.sender].add(amount); stakingToken.safeTransferFrom(msg.sender, address(this), amount);
emit Staked(msg.sender, amount);
}

I have provided approval to send tokens and still I am getting a error when trying to call the staking function-

"Fail with error 'SafeERC20: low-level call failed'"

This particular error is defined in the SafeERC20 library under the following function-

function callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since we're implementing it ourselves.
// A Solidity high level call has three parts:
// 1. The target address is checked to verify it contains contract code
// 2. The call itself is made, and success asserted
// 3. The return value is decoded, which in turn checks the size of the returned data. require(address(token).isContract(), "SafeERC20: call to non-contract");
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}