#3570 fix: build on older Qt5 systems

Signed-off-by: Patrizio Bekerle <patrizio@bekerle.com>

Author: pbek

CHANGELOG.md

@@ -1,5 +1,13 @@
 # QOwnNotes Changelog
 
+## 26.4.17
+
+- Fixed a build error on older Qt5 systems after the **Settings dialog** widget
+  refactoring by explicitly including `QDebug` in
+  `widgets/settings/debugsettingswidget.cpp`, so Ubuntu Focal and Debian 10
+  builds no longer fail with an incomplete `QDebug` type during the `#3570`
+  changes (for [#3570](https://github.com/pbek/QOwnNotes/issues/3570))
+
 ## 26.4.16
 
 - Tag assignments are now preserved when a **note subfolder** is renamed,

src/widgets/settings/debugsettingswidget.cpp

@@ -16,6 +16,7 @@
 
 #include <QApplication>
 #include <QClipboard>
+#include <QDebug>
 #include <QFile>
 #include <QTextStream>