Add missing import

diff --git a/wcfsetup/install/files/lib/data/language/LanguageAction.class.php b/wcfsetup/install/files/lib/data/language/LanguageAction.class.php
index 7f445e4c2692b76400f35b403268534296168ed0..908a58348d028fe8d050115020c39d07f59102fc 100644 (file)
--- a/wcfsetup/install/files/lib/data/language/LanguageAction.class.php
+++ b/wcfsetup/install/files/lib/data/language/LanguageAction.class.php
@@ -2,6 +2,7 @@
 namespace wcf\data\language;
 use wcf\data\AbstractDatabaseObjectAction;
 use wcf\data\IToggleAction;
+use wcf\system\exception\UserInputException;
 use wcf\system\WCF;
 
 /**