Only address type does not pass truffle test - solidity

Question

I did the truffle test.
As shown below,everything else passes, but only the address type(address public custodian)does not pass the test.
Advice, please.
Contract: Fundraiser
initialization
✔ gets the beneficiary name
✔ gets the beneficiary url
✔ gets the beneficiary image url
✔ gets the beneficiary description
✔ gets the beneficiary
1) gets the cunstodian
No events were emitted
5 passing (203ms)
1 failing
Contract: Fundraiser
initialization
gets the cunstodian:
TypeError: fundraiser.cunstodian is not a function
at Context. (test/fundraiser_test.js:54:38)
at processImmediate (node:internal/timers:466:21)Fundraiser initialization
Fundraiser.sol
pragma solidity >0.4.23 <0.7.0;
contract Fundraiser{
string public name;
string public url;
string public imageURL;
string public description;
address payable public beneficiary;　　
# falls to the test
address public custodian;
constructor(
string memory _name,
string memory _url,
string memory _imageURL,
string memory _description,
address payable _beneficiary,
address _custodian
)
public
{
name = _name;
url = _url;
imageURL = _imageURL;
description = _description;
beneficiary= _beneficiary;
custodian = _custodian;
}
}
test/fundraiser_test.js
const FundraiserContract = artifacts.require("Fundraiser");
contract("Fundraiser", accounts => {
let fundraiser;
const name = "Beneficiary Name";
const url = "beneficiaryname.org";
const imageURL="https://placeKitten.com/600/350";
const description = "Beneficiary description";
const beneficiary = accounts[1];
const cunstodian = accounts[0];
beforeEach(async () => {
fundraiser = await FundraiserContract.new(
name,
url,
imageURL,
description,
beneficiary,
cunstodian
)
});
describe("initialization", () => {
it("gets the beneficiary name", async () => {
const actual = await fundraiser.name();
assert.equal(actual, name, "names should match");
});
it("gets the beneficiary url", async () => {
const actual = await fundraiser.imageURL();
assert.equal(actual, imageURL, "imageURL should match");
});
it("gets the beneficiary image url", async () => {
const actual = await fundraiser.name();
assert.equal(actual, name, "names should match");
});
it("gets the beneficiary description", async () => {
const actual = await fundraiser.description();
assert.equal(actual, description, "description should match");
});
it("gets the beneficiary", async () => {
const actual = await fundraiser.beneficiary();
assert.equal(actual, beneficiary, "beneficiary should match");
});
it("gets the cunstodian", async () => {
const actual = await fundraiser.cunstodian();
assert.equal(actual, cunstodian, "cunstodian should match");
});
});
});;
source「
Hands-On Smart Contract Development with Solidity and Ethereum」