Fix report content stopping to be nullable

lib/pleroma/web/admin_api/views/report_view.ex

@@ -24,6 +24,13 @@ defmodule Pleroma.Web.AdminAPI.ReportView do
     [account_ap_id | status_ap_ids] = report.data["object"]
     account = User.get_cached_by_ap_id(account_ap_id)
 
+    content =
+      unless is_nil(report.data["content"]) do
+        HTML.filter_tags(report.data["content"])
+      else
+        nil
+      end
+
     statuses =
       Enum.map(status_ap_ids, fn ap_id ->
         Activity.get_by_ap_id_with_object(ap_id)
@@ -33,7 +40,7 @@ defmodule Pleroma.Web.AdminAPI.ReportView do
       id: report.id,
       account: AccountView.render("account.json", %{user: account}),
       actor: AccountView.render("account.json", %{user: user}),
-      content: HTML.filter_tags(report.data["content"]),
+      content: content,
       created_at: created_at,
       statuses: StatusView.render("index.json", %{activities: statuses, as: :activity}),
       state: report.data["state"]