Tweak I

php/utils/room-icons.php

@@ -75,7 +75,7 @@
         // Resize image
         $gd_image = imagecreatefromstring($icon_cached_contents);
         $gd_resized = imagescale($gd_image, $width, $height);
-        imagewebp($gd_resized, to: $icon_resized);
+        imagewebp($gd_resized, $icon_resized);
         return room_icon_path_relative($room_id, $size);
     }