If the images in Image Widget have been broken and still refer to the inappropriate URL please use this Sitefiity API to recompile all image URLs. You should place the following source code in the Page_Load method of a new web form and request the web form in your browser. Please see the example bellow:
LibrariesManager librariesManager = LibrariesManager.GetManager();
var document = librariesManager.GetImages().Where(d => d.ApprovalWorkflowState ==
Additional information that might be useful is that the images are saved in table sf_media_content of the database.
Please note that you need to restart the application (make a dummy edit and save the web.config) before executing the code.
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