3 files changed, 8 insertions, 3 deletions
diff --git a/vendor/sabre/dav/lib/CalDAV/Schedule/Plugin.php b/vendor/sabre/dav/lib/CalDAV/Schedule/Plugin.php
index 6f8f68432..a1f8202ec 100644
--- a/vendor/sabre/dav/lib/CalDAV/Schedule/Plugin.php
+++ b/vendor/sabre/dav/lib/CalDAV/Schedule/Plugin.php
@@ -609,7 +609,7 @@ class Plugin extends ServerPlugin
      * @param bool             $modified  a marker to indicate that the original object
      *                                    modified by this process
      */
-    protected function processICalendarChange($oldObject = null, VCalendar $newObject, array $addresses, array $ignore = [], &$modified = false)
+    protected function processICalendarChange($oldObject, VCalendar $newObject, array $addresses, array $ignore = [], &$modified = false)
     {
         $broker = new ITip\Broker();
         $messages = $broker->parseEvent($newObject, $addresses, $oldObject);
diff --git a/vendor/sabre/dav/lib/DAV/Server.php b/vendor/sabre/dav/lib/DAV/Server.php
index 37bf282e8..4c213c1bd 100644
--- a/vendor/sabre/dav/lib/DAV/Server.php
+++ b/vendor/sabre/dav/lib/DAV/Server.php
@@ -1075,7 +1075,12 @@ class Server implements LoggerAwareInterface, EmitterInterface
             return false;
         }
 
-        $parent = $this->tree->getNodeForPath($dir);
+        try {
+            $parent = $this->tree->getNodeForPath($dir);
+        } catch (Exception\NotFound $e) {
+            throw new Exception\Conflict('Files cannot be created in non-existent collections');
+        }
+
         if (!$parent instanceof ICollection) {
             throw new Exception\Conflict('Files can only be created as children of collections');
         }
diff --git a/vendor/sabre/dav/lib/DAV/Version.php b/vendor/sabre/dav/lib/DAV/Version.php
index a7f5269bf..70948305e 100644
--- a/vendor/sabre/dav/lib/DAV/Version.php
+++ b/vendor/sabre/dav/lib/DAV/Version.php
@@ -16,5 +16,5 @@ class Version
     /**
      * Full version number.
      */
-    public const VERSION = '4.1.1';
+    public const VERSION = '4.1.3';
 }