fix missing static folder

main.go

@@ -32,7 +32,7 @@ func main() {
 	r.HandleFunc("/api/images", handlers.ListFilesHandler).Methods("GET")
 	r.HandleFunc("/ws", handlers.Websocket)
 	r.HandleFunc("/upload", handlers.UploadHandler).Methods("POST")
-	r.HandleFunc("/settings", func(w http.ResponseWriter, r *http.Request) { http.ServeFile(w, r, "settings.html") })
+	r.HandleFunc("/settings", func(w http.ResponseWriter, r *http.Request) { http.ServeFile(w, r, staticFolder+"settings.html") })
 	r.HandleFunc("/api/save-schedule", handlers.SaveSchedule).Methods("POST")
 	r.HandleFunc("/api/get-schedule", handlers.GetSchedule).Methods("GET")
 

web/static/frame.html

@@ -193,6 +193,7 @@
                 const res = await fetch('/api/info');
                 const data = await res.json();
                 const uploadUrl = `http://${data.ip}:${data.port}/`;
+
                 new QRCode(document.getElementById("qrcode"), {
                     text: uploadUrl,
                     width: 128,