[BUG] Call to undefined function get_home_path() in […]class-robots-txt.php:52

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• WP: 5.7.2
• PHP:

  
  PHP 7.3.27-1~deb10u1 (cli) (built: Feb 13 2021 16:31:40) ( NTS )
  Copyright (c) 1997-2018 The PHP Group
  Zend Engine v3.3.27, Copyright (c) 1998-2018 Zend Technologies
      with Zend OPcache v7.3.27-1~deb10u1, Copyright (c) 1999-2018, by Zend Technologies
  

• Plugin: 3.0

The latest version caused our website to fail totally and displaying a white page with a link “How to trouble shoot wordpress”.

The servers logs show the following error message:

[Tue Jul 20 07:27:45.345625 2021] [php7:error] [pid 29562] [client 80.156.182.234:55883] PHP Fatal error:  Uncaught Error: Call to undefined function get_home_path() in /srv/example.com/wp-content/plugins/uk-cookie-consent/includes/controllers/class-robots-txt.php:52\nStack trace:\n#0 /srv/example.com/wp-includes/class-wp-hook.php(292): termly\\Robots_Txt::check_file(Object(WP_Rewrite))\n#1 /srv/example.com/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters('', Array)\n#2 /srv/example.com/wp-includes/plugin.php(551): WP_Hook->do_action(Array)\n#3 /srv/example.com/wp-includes/class-wp-rewrite.php(1453): do_action_ref_array('generate_rewrit...', Array)\n#4 /srv/example.com/wp-includes/class-wp-rewrite.php(1483): WP_Rewrite->rewrite_rules()\n#5 /srv/example.com/wp-includes/class-wp-rewrite.php(1854): WP_Rewrite->wp_rewrite_rules()\n#6 /srv/example.com/wp-includes/class-wp-hook.php(292): WP_Rewrite->flush_rules(true)\n#7 /srv/example.com/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array)\n#8 /srv/example.com/wp-includes/plugin.php( in /srv/example.com/wp-content/plugins/uk-cookie-consent/includes/controllers/class-robots-txt.php on line 52

I could “solve” the issue with replacing line 52 in class-robots-txt.php:

$robots_path = \get_home_path() . '/robots.txt';

with

$robots_path = ABSPATH . '/robots.txt';

I followed this article:

https://riptutorial.com/wordpress/topic/9699/get-home-path–

Hope this helps in will be fixed in the next release of this plugin.