Resolve Cannot read property ‘someProperty’ of null error in Angular

The error message Cannot read property ‘someProperty’ of null in Angular means that you are trying to access a property on an object that is null or undefined. This can happen if the object has not been initialized yet, or if it has been destroyed.

To resolve this error, you need to make sure that the object is not null or undefined before you access its properties. You can do this by checking the value of the object using the if statement, or by using the ? operator.

const myObject = null;

if (myObject) {
  const someProperty = myObject.someProperty;
  console.log(someProperty);
} else {
  console.log('The object is null or undefined.');
}

const someProperty = myObject?.someProperty;
console.log(someProperty);

The ? operator is a nullish coalescing operator, which means that it will return the value of its left operand if it is not null or undefined. Otherwise, it will return the value of its right operand.

If you are still getting the error message even after checking the value of the object, then it is possible that the object is being destroyed before you have a chance to access its properties. In this case, you need to find out why the object is being destroyed, and try to prevent it from being destroyed until you have finished using it.