Below are the code which I written to interact with shadow DOM elements it is working for some element but it is not working for below element. I am getting " org.openqa.selenium.JavascriptException: javascript error: Cannot read properties of null (reading 'click')" error. Any reason why this particular element is not interactable ?

WebElement searchIcon = (WebElement) js.executeScript("return document.querySelector("#sbPageContainer").shadowRoot.querySelector("#content > sb-product-lookup").shadowRoot.querySelector("#headersearch").shadowRoot.querySelector("#search")");

    ((JavascriptExecutor)driver).executeScript("arguments[0].click();", searchIcon);