replaced file server with writing files manually

main.go

@@ -94,7 +94,14 @@ func get(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	fileServer.ServeHTTP(w, r)
+	file, err := os.Open(path)
+	if err != nil {
+		handleError(w, r, err)
+		return
+	}
+	defer file.Close()
+
+	io.Copy(w, file)
 }
 
 func put(w http.ResponseWriter, r *http.Request) {