From 5ca22c2459fb7d9c0d734aaa892c8058d6ab56c0 Mon Sep 17 00:00:00 2001
From: FloatingGhost <hannah@coffee-and-dreams.uk>
Date: Sat, 11 Mar 2023 17:24:49 +0000
Subject: [PATCH] ensure we can't have a null in appends

---
 lib/pleroma/web/mastodon_api/views/status_view.ex | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/pleroma/web/mastodon_api/views/status_view.ex b/lib/pleroma/web/mastodon_api/views/status_view.ex
index 79438571c..3868da8d9 100644
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@@ -227,8 +227,10 @@ def render("show.json", %{activity: %{data: %{"object" => _object}} = activity}
         |> Enum.filter(fn tag -> is_map(tag) and tag["type"] == "Mention" end)
         |> Enum.map(fn tag -> tag["href"] end)
 
+      to_data = if is_nil(object.data["to"]), do: [], else: object.data["to"]
+
       mentions =
-        (object.data["to"] ++ tag_mentions)
+        (to_data ++ tag_mentions)
         |> Enum.uniq()
         |> Enum.map(fn
           Pleroma.Constants.as_public() -> nil