How to fix 'Cannot read properties of null (reading 'addEventListener')'

In this case, the error occurs because you're trying to add an event listener to a variable that is null. To fix this, ensure that the variable is properly initialized and points to a valid element before accessing its properties or methods.

// Create a variable and initialize it with a value or element
let myElement = document.getElementById('myElement');

// Check if the element is not null before adding an event listener
if (myElement !== null) {
  myElement.addEventListener('click', myFunction);
} else {
  console.log("Element not found!");
}

function myFunction() {
  console.log("Element clicked!");
}

Make sure to replace 'myElement' with the correct ID or variable name in your code to reference the intended element.