From 7bc8666f309220a0eb93bca49aaa741bb013b26a Mon Sep 17 00:00:00 2001
From: Paal Joergensen <pal.jorgensen@gmail.com>
Date: Thu, 15 Aug 2019 21:15:55 +0200
Subject: [PATCH] Don't invoke clearFilteredParameters for empty array

---
 h5p.classes.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/h5p.classes.php b/h5p.classes.php
index d846884..c127185 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -1647,8 +1647,11 @@ class H5PStorage {
 
       $library_ids[] = $library['libraryId'];
     }
+
     // Make sure libraries dependencies, parameter filtering and export files gets regenerated for all content who uses these libraries.
-    $this->h5pF->clearFilteredParameters($library_ids);
+    if (!empty($library_ids)) {
+      $this->h5pF->clearFilteredParameters($library_ids);
+    }
 
     // Tell the user what we've done.
     if ($newOnes && $oldOnes) {