Live Placement is not installed
Incase you have an Android phone or tablet you can use the app "Live Placement" to preview an object in your surroundings. When clicking the link, "Live Placement" will show the object instead of you seeing this message.
Using "Live Placement" you can use your mobile as a pair of glasses to see if a design will work. Where does that painting, vase or flower fit the surroundings?
The object you would like to test is added to the preview from your camera. For you to get the correct proportions you scale the image according to a referenceobject's width or height.