Selenium exceptions and their possible reasons

• ElementNotSelectableException 

Thrown when trying to select an unselectable element.

• ElementNotVisibleException

Thrown when an element is present on the DOM, but it is not visible, and so is not able to be interacted with.

• ErrorInResponseException 

Thrown when an error has occurred on the server side. 

• NoAlertPresentException 

Thrown when switching to no presented alert. 

• NoSuchElementException 

Thrown when element could not be found. 

• NoSuchFrameException 

Thrown when frame target to be switched doesn’t exist. 

• NoSuchWindowException 

Thrown when window target to be switched doesn’t exist. 

• StaleElementReferenceException 

Stale means the element no longer appears on the DOM of the page. 
Thrown when a reference to an element is now “stale”. 

• TimeoutException 

Thrown when a command does not complete in enough time. 

• UnexpectedAlertPresentException 

Thrown when an unexpected alert is appeared. 

• InvalidCookieDomainException 

Thrown when attempting to add a cookie under a different domain than the current URL. 

• InvalidSelectorException 

Thrown when the selector which is used to find an element does not return a WebElement. 

• InvalidSwitchToTargetException 

Thrown when frame or window target to be switched doesn’t exist.

• NoSuchAttributeException

Thrown when the attribute of element could not be found. 

• WebDriverException 

Base webdriver exception.