Keeps saying the user and computer are a tie

Hello this is my code im not getting an error but it just keeps saying the user and computer are a tie any advice here is my code
const getUserChoice = userInput =>
{
userInput = userInput.toLowerCase()
if (userInput === ‘rock’ || userInput === ‘paper’ || userInput === ‘scissors’){
return userInput
} else{
console.log(‘Error please select rock, paper or scissors’)
}
}
console.log(getUserChoice(‘paper’))

function getComputerChoice(){
const choice = Math.floor(Math.random() * 3)
switch(choice){
case 0:
return ‘rock’
break
case 1:
return ‘paper’
break
case 2:
return ‘scissors’
break
}
}
function determineWinner(userChoice, computerChoice){
if (userChoice === computerChoice){
return ‘The game was a tie!’
}
if (userChoice === ‘rock’){
if (computerChoice === ‘paper’){
return ‘The computer won’
} else {
return ‘The user won’
}
}
if (userChoice === ‘paper’){
if(computerChoice ===‘rock’){
return ‘The user one’
} else {
return ‘The computer one’
}
}

if (userChoice === ‘scissors’){
if(computerChoice === ‘paper’){
return ‘The user one’
} else {
return ‘The computer one’
}
}
}
console.log(determineWinner())

Where are the expected arguments for user and computer?