PHP Fatal error: Uncaught TypeError: WP_Rocket\Engine\Optimization\CacheDynamicResource::set_cached_import(): Argument #1 when visit page template with dynamicc php that doesnot exist

[Mai-Saad]

Describe the bug
When visiting FE of page template https://subdomain.rocketlabsqa.ovh/llbgcss/ after fresh install and activation , we have fatal error

[28-Jan-2025 14:54:23 UTC] PHP Fatal error:  Uncaught TypeError: WP_Rocket\Engine\Optimization\CacheDynamicResource::set_cached_import(): Argument #1 ($path) must be of type string, false given, called in /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/plugins/wp-rocket/inc/Engine/Optimization/CSSTrait.php on line 56 and defined in /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/plugins/wp-rocket/inc/Engine/Optimization/CSSTrait.php:537
Stack trace:
#0 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/plugins/wp-rocket/inc/Engine/Optimization/CSSTrait.php(56): WP_Rocket\Engine\Optimization\CacheDynamicResource->set_cached_import()
#1 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/plugins/wp-rocket/inc/Engine/Optimization/CacheDynamicResource.php(168): WP_Rocket\Engine\Optimization\CacheDynamicResource->rewrite_paths()
#2 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/plugins/wp-rocket/inc/Engine/Optimization/CacheDynamicResource.php(134): WP_Rocket\Engine\Optimization\CacheDynamicResource->replace_url()
#3 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/class-wp-hook.php(326): WP_Rocket\Engine\Optimization\CacheDynamicResource->cache_dynamic_resource()
#4 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#5 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/class-wp-styles.php(412): apply_filters()
#6 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/class-wp-styles.php(221): WP_Styles->_css_href()
#7 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/class-wp-dependencies.php(137): WP_Styles->do_item()
#8 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/functions.wp-styles.php(68): WP_Dependencies->do_items()
#9 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/class-wp-hook.php(324): wp_print_styles()
#10 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#11 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/plugin.php(517): WP_Hook->do_action()
#12 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/general-template.php(3065): do_action()
#13 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/rocket-test-data/templates/llbgcss_subsite1.php(51): wp_head()
#14 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-includes/template-loader.php(106): include('...')
#15 /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-blog-header.php(19): require_once('...')
#16 /var/www/subdomain.rocketlabsqa.ovh/htdocs/index.php(17): require('...')
#17 {main}
  thrown in /var/www/subdomain.rocketlabsqa.ovh/htdocs/wp-content/plugins/wp-rocket/inc/Engine/Optimization/CSSTrait.php on line 537

To Reproduce
Steps to reproduce the behavior:

1. Install WPR 3.18 on multisite subdomain
2. activate WPR on main site
3. Visit page https://subdomain.rocketlabsqa.ovh/llbgcss/
4. See error

Expected behavior
No fatal error even if there are styles with 404

Environment

• WordPress: 6.6.2
• PHP: 8.3.15
• Server: nginx/1.26.2
• Database: mysqli (Server: 10.6.20-MariaDB-ubu2204-log / Client: mysqlnd 8.3.15)
• Browser: Chrome 131.0.0.0
• OS: Linux
• Theme: Twenty Twenty-One 1.8
• Plugins:
  • Action Scheduler 3.8.1
  • Imagify 2.2.4
  • Nginx Helper 2.2.3
  • SQL Buddy 1.0.0
  • Test Reports 1.2.0
  • WooCommerce 9.3.3
  • WP Media | Template Loader plugin. 1.0.0
  • WPML Multilingual CMS 4.6.5
  • WP Rocket 3.18