Cannot read property 'gasUsed' of undefined

[johhnsmmith198]

truffle version

Truffle v5.4.26 (core: 5.4.26)
Solidity - 0.8.10 (solc-js)
Node v14.16.1
Web3.js v1.5.3

those lines fails in index.js of the truffle-cost lib

  const txResult = await asyncFn;
  // Used gas for Mocha reporter.
  result.gasUsed = txResult.receipt.gasUsed;

My test looks something like this

const truffleCost = require("truffle-cost");

const Serializer = artifacts.require("Serializer");

contract("Serializer", (accounts) => {
  const [deployerAddress, tokenHolderOneAddress, tokenHolderTwoAddress] = accounts;

  it("hexBytesToIntArray", async () => {
    let s = await Serializer.deployed();
    let result = await truffleCost.log(
      s.hexBytesToIntArray.call(web3.utils.fromAscii("08bbe0e25e412fff08bbe0e25e4a0fff08bbe0e25e4a3fff"))
    );
    let expected = [
      new BN("629343835796877311").toString(),
      new BN("629343835797458943").toString(),
      new BN("629343835797471231").toString(),
    ];
    const resultS = result.map((x) => x.toString());
    assert.deepEqual(resultS, expected);
  });
});

any idea why my transaction doesn't have a receipt?
the contract function signature looks like this

    function hexBytesToIntArray(bytes memory s) public pure returns (uint64[] memory) {

Thanks

[NikolaiSch]

@johhnsmmith198 i recommend you use this maintained library, it seems to have a lot more features, and is currently maintained, this hasn't in 3 years