Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php:528 Stack trace: #0 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php(528): implode(Array, '|') #1 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php(314): MatthiasMullie\Minify\CSS->shortenColors('@font-face{font...') #2 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/Minify.php(111): MatthiasMullie\Minify\CSS->execute(NULL) #3 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/inc/classes/optimization/CSS/class-minify.php(175): MatthiasMullie\Minify\Minify->minify() #4 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/inc/classes/optimization/CSS/class-minify.php(128): WP_Rocket\Optimization\CSS\Minify->minify('/homepages/17/d...', '/homepages/17/d...') #5 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/inc/classes/optimization/CSS/class-minify.php(66): WP_Rocket\Optimization\CSS\Minify->replace_url('https://ing-huf...') #6 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/inc/classes/subscriber/Optimization/class-abstract-minify-subscriber.php(85): WP_Rocket\Optimization\CSS\Minify->optimize('<!DOCTYPE html>...') #7 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/inc/classes/subscriber/Optimization/class-minify-css-subscriber.php(44): WP_Rocket\Subscriber\Optimization\Minify_Subscriber->optimize('<!DOCTYPE html>...') #8 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/class-wp-hook.php(307): WP_Rocket\Subscriber\Optimization\Minify_CSS_Subscriber->process('<!DOCTYPE html>...') #9 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/plugin.php(191): WP_Hook->apply_filters('<!DOCTYPE html>...', Array) #10 /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/inc/classes/Buffer/class-optimization.php(94): apply_filters('rocket_buffer', '<!DOCTYPE html>...') #11 [internal function]: WP_Rocket\Buffer\Optimization->maybe_process_buffer('<!DOCTYPE html>...', 9) #12 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/functions.php(5275): ob_end_flush() #13 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/class-wp-hook.php(307): wp_ob_end_flush_all('') #14 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #15 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #16 /homepages/17/d475809358/htdocs/2017_relaunch/wp-includes/load.php(1102): do_action('shutdown') #17 [internal function]: shutdown_action_hook() #18 {main} thrown in /homepages/17/d475809358/htdocs/2017_relaunch/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php on line 528