The [FolderServeWebPage] class serves files. The [FolderServeWebPage] class just serves files found in [code]serve_folder[/code], and it's subfolders. If a file does not exists, it sends a 404 error. As an example let's take this folder: [code]content_folder/ -- ct/ ---- ctf.jpg -- file1.md -- test.jpg[/code] A [FolderServeWebPage] is pointed to the [code]content_folder[/code] folder, it's set as a child of a [WebRoot], and it's uri segment is [code]served_files[/code]: [code]Opening: http://127.0.0.1/served_files will send a 404 error. Opening: http://127.0.0.1/served_files/file1.md will send page1.md. Opening: http://127.0.0.1/served_files/test.jpg will send page2.md. Opening: http://127.0.0.1/served_files/ct will send a 404 error. Opening: http://127.0.0.1/served_files/ct/ctf.jpg will send ctf.jpg.[/code] Refresh the internal [FileCache]. The folder that will get served.