Cannot read properties of null (reading ‘useref’) typeerror: cannot read properties of null (reading ‘useref’)

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The error message “cannot read properties of null (reading ‘useref’)” occurs when you are trying to access a property or method on a variable that is null or undefined. In this specific case, it seems like the variable ‘useref’ is null when you are trying to access it.

To fix this error, you need to make sure that the variable ‘useref’ is properly assigned a value before trying to access its properties or methods. Here’s an example to help you understand: 


    // Incorrect usage - accessing property on a null variable
    var useref = null;
    console.log(useref.someProperty); // This will throw an error
    
    // Correct usage - assigning a value to the variable before accessing its property
    var useref = { someProperty: 'Hello' };
    console.log(useref.someProperty); // This will print 'Hello'

In the incorrect usage example, the variable ‘useref’ is assigned a null value, so any attempt to access its properties will result in the mentioned error.

On the other hand, in the correct usage example, the variable ‘useref’ is assigned an object with a property called ‘someProperty’. So accessing ‘useref.someProperty’ will print the value of that property without any errors.

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