I added image plugin to richtext but it's not working. I'm unable to drag the the image on to richtext editor. I have added image plugin which is of primary type nt:unstructured having features of type String and the value is *(asterik). But it is not working. I tried with "String" and "image" but it is also not working. I'm unable to drag and drop the image from content finder onto the rich text editor. Please provide any suggestions to resolve this issue.