Avoid fatal error

diff --git a/libertree/libertree.php b/libertree/libertree.php
index a7dcce586e8a5da1fe505adc6d6cce1d075ec9a9..34fcd7989b296a50e0f3d06435e200b7fe80a96f 100644 (file)
--- a/libertree/libertree.php
+++ b/libertree/libertree.php
@@ -6,6 +6,7 @@
  * Author: Tony Baldwin <https://free-haven.org/u/tony>
  */
 
+use Friendica\App;
 use Friendica\Content\Text\BBCode;
 use Friendica\Core\Addon;
 use Friendica\Core\L10n;