diff -rauN obs-studio-21.1.1/UI/frontend-plugins/frontend-tools/scripts.cpp obs-studio-21.1.1-missing-qaction-patch/UI/frontend-plugins/frontend-tools/scripts.cpp
--- obs-studio-21.1.1/UI/frontend-plugins/frontend-tools/scripts.cpp	2018-03-22 03:16:59.000000000 +0100
+++ obs-studio-21.1.1-missing-qaction-patch/UI/frontend-plugins/frontend-tools/scripts.cpp	2018-06-27 10:16:33.907952968 +0200
@@ -12,6 +12,7 @@
 #include <QFont>
 #include <QDialogButtonBox>
 #include <QResizeEvent>
+#include <QAction>
 
 #include <obs.hpp>
 #include <obs-module.h>