Cannot read properties of null (reading 'getAttribute')" found in

It seems like you encountered an error message in your code. The error message you provided suggests that you are trying to access the `getAttribute` method on a variable that is null or undefined.

To fix this issue, you need to make sure that the variable you are trying to access has a value assigned to it before using the `getAttribute` method. This can be done by checking if the variable is null or undefined before accessing its properties.

Here's an example of how you can handle this error:

// Check if the variable exists and is not null or undefined
if (variable) {
  // Access the attribute using getAttribute method
  const attributeValue = variable.getAttribute("attributeName");
  // Use the attribute value in your code
  console.log(attributeValue);
} else {
  console.log("Variable is null or undefined.");
}

By adding this check, you can prevent the "Cannot read properties of null (reading 'getAttribute')" error from occurring.