error in TagsController: undefined method name

[gled-rs]

The error log:

Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] method=GET path=/tags/makeeaskateagain format=html controller=TagsController action=show status=500 error='ActionView::Template::Error: undefined method name' for nil:NilClass' duration=27.82 view=0.00 db=2.08 Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] ActionView::Template::Error (undefined method name' for nil:NilClass):
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] 1: - content_for :page_title do
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] 2: = "##{@tag.name}"
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] 3:
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] 4: .compact-header
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] 5: %h1<
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b]
Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] app/views/tags/show.html.haml:2:in block in _app_views_tags_show_html_haml__1334565930023523856_70166789241020' Apr 27 23:02:21 mastodon.host bundle[4945]: [5c42fc2a-48ec-44ef-9cb6-60718b16719b] app/views/tags/show.html.haml:1:in _app_views_tags_show_html_haml__1334565930023523856_70166789241020'

reproduced on v1.3.1

• I searched or browsed the repo’s other issues to ensure this is not a duplicate.
• This bug happens on a tagged release and not on master (If you're a user, don't worry about this).