Rails 6.1: ActionView::Template::Error: can't modify frozen Hash

[richardonrails]

I'm trying to upgrade from Rails 6.0 to 6.1 and suddenly I'm getting this error that seems related to crummy, though I can't figure out what's wrong:

ActionView::Template::Error (can't modify frozen Hash):
    1: <%= render_crumbs :last_crumb_linked => false, :format => :html_list, :ul_class => 'breadcrumb', :last_class => 'active' %>
  
app/views/layouts/_breadcrumbs.html.erb:1
app/views/articles/edit.html.erb:2

If I comment out the render_crumbs call in my template then the error goes away.

Ideas?

[rhiroe]

@richardonrails

Hi, this repository has not been maintained for a long time.
Please fork the repository at https://github.com/wested/crummy and try modifying lib/crummy/standard_renderer.rb:7 as follows

-    ActionView::Helpers::TagHelper::BOOLEAN_ATTRIBUTES.merge([:itemscope].to_set)
+    ActionView::Helpers::TagHelper::BOOLEAN_ATTRIBUTES.dup.merge([:itemscope].to_set)

[richardonrails]

Thank you!

For anyone else who's looking for a similar breadcrumb library that's actively maintained, I found these 2:
https://github.com/piotrmurach/loaf
https://github.com/weppos/breadcrumbs_on_rails