This issue is caused by a bad selector. Whenever you choose content for a field, a textfield with red text appears. This is the selector that will be used to import your data. If that selector is changed by the source page, than the scraper cannot find the content. If you understand CSS selectors feel free to edit this selector data yourself. If not, we suggest trying to select content differently. For example, instead of choosing the blue box that surrounds three paragraphs and an image, try selecting each paragraph and the image separately and you may get different results.