Fix the ui_output.h include path
#include "AsyncJson.h"
#include "sensesp/ui/ui_button.h"
#include "sensesp/system/configurable.h"
-#include "sensesp/system/ui_output.h"
+#include "sensesp/ui/ui_output.h"
#include "sensesp_base_app.h"
// Include the web UI stored in PROGMEM space
