2 files changed, 4 insertions, 2 deletions
diff --git a/Digitigrade/Timeline/HomeTimeline.php b/Digitigrade/Timeline/HomeTimeline.php
index a89c29a..c710992 100644
--- a/Digitigrade/Timeline/HomeTimeline.php
+++ b/Digitigrade/Timeline/HomeTimeline.php
@@ -20,7 +20,9 @@ class HomeTimeline extends Timeline {
     }
 
     private function filterItems(array $items): array {
-        return array_filter($items, function (TimelineItem $item) {
+        return array_filter($items, function (?TimelineItem $item) {
+            if ($item == null)
+                return false;
             $obj = $item->getObject();
             if (!($obj instanceof Note))
                 return true;
diff --git a/Digitigrade/Timeline/TimelineIncludeable.php b/Digitigrade/Timeline/TimelineIncludeable.php
index 5406543..af288b2 100644
--- a/Digitigrade/Timeline/TimelineIncludeable.php
+++ b/Digitigrade/Timeline/TimelineIncludeable.php
@@ -4,5 +4,5 @@ namespace Digitigrade\Timeline;
 interface TimelineIncludeable {
     public function renderAsHtml();
     public function toJsonReference(): mixed;
-    public static function fromJsonReference(mixed $reference): self;
+    public static function fromJsonReference(mixed $reference): ?self;
 }
 \ No newline at end of file