This error occurs when elements such as the “option” element, which are treated as having a size of 0, are used as target elements for the following commands.
- Assert UI element's image matches
- Assert UI element's image does not match
- Store image of UI element
Due to the HTML specification, the above commands cannot be used for such elements that are treated as having a size of 0. If you want to check the content of the element, use “Assert UI element equals” or “Assert UI element contains” commands instead.