Fatal error: Uncaught TypeError: substr(): Argument #1 ($string) must be of type string, int given in D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-content\plugins\wp-rocket\inc\ThirdParty\Plugins\CDN\Cloudflare.php:496 Stack trace: #0 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-content\plugins\wp-rocket\inc\ThirdParty\Plugins\CDN\Cloudflare.php(496): substr(4111, -24) #1 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-content\plugins\wp-rocket\inc\ThirdParty\Plugins\CDN\Cloudflare.php(469): WP_Rocket\ThirdParty\Plugins\CDN\Cloudflare->unregister_callback('deleted_post', 'purgeCacheByRel...') #2 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-includes\class-wp-hook.php(353): WP_Rocket\ThirdParty\Plugins\CDN\Cloudflare->unregister_cloudflare_clean_on_post('') #3 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-includes\class-wp-hook.php(377): WP_Hook->apply_filters(NULL, Array) #4 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-includes\plugin.php(523): WP_Hook->do_action(Array) #5 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-settings.php(779): do_action('init') #6 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-config.php(92): require_once('D:\\InetPub\\vhos...') #7 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-load.php(50): require_once('D:\\InetPub\\vhos...') #8 D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-blog-header.php(13): require_once('D:\\InetPub\\vhos...') #9 D:\InetPub\vhosts\exonware-1780.package\exonware.com\index.php(17): require('D:\\InetPub\\vhos...') #10 {main} thrown in D:\InetPub\vhosts\exonware-1780.package\exonware.com\wp-content\plugins\wp-rocket\inc\ThirdParty\Plugins\CDN\Cloudflare.php on line 496