For some reason the 'breadcrumb' key is sometimes not in $vars in the preprocess breadcrumb hook.
The error shows up as a warning on the site.
Warning
: foreach() argument must be of type array|object, null given in
/var/www/html/docroot/modules/contrib/html_title/html_title.module
on line
88I'm trying to use Breadcrumbs with facetted search connected to solr and the error shows up when there's no search parameters.
Add a simple check for the 'breadcrumb' keys in the $vars array in the preprocess_breadcrumb hook.
Review.
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None.
None.
Needs review
1.0
Code
"isset" check should be enough even though
$variables['breadcrumb']
is supposed to be an empty array by default. Please see
template_preprocess_breadcrumb()