Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/vendor/matthiasmullie/minify/src/CSS.php:528 Stack trace: #0 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/vendor/matthiasmullie/minify/src/CSS.php(528): implode(Array, '|') #1 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/vendor/matthiasmullie/minify/src/CSS.php(314): MatthiasMullie\Minify\CSS->shortenColors('') #2 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/vendor/matthiasmullie/minify/src/Minify.php(111): MatthiasMullie\Minify\CSS->execute(NULL) #3 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/inc/classes/optimization/CSS/class-minify.php(175): MatthiasMullie\Minify\Minify->minify() #4 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/inc/classes/optimization/CSS/class-minify.php(128): WP_Rocket\Optimization\CSS\Minify->minify('/home/clients/3...', '/home/clients/3...') #5 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/inc/classes/optimization/CSS/class-minify.php(66): WP_Rocket\Optimization\CSS\Minify->replace_url('https://oliweb-...') #6 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/inc/classes/subscriber/Optimization/class-abstract-minify-subscriber.php(85): WP_Rocket\Optimization\CSS\Minify->optimize('<!DOCTYPE html>...') #7 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/inc/classes/subscriber/Optimization/class-minify-css-subscriber.php(44): WP_Rocket\Subscriber\Optimization\Minify_Subscriber->optimize('<!DOCTYPE html>...') #8 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/class-wp-hook.php(308): WP_Rocket\Subscriber\Optimization\Minify_CSS_Subscriber->process('<!DOCTYPE html>...') #9 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/plugin.php(205): WP_Hook->apply_filters('<!DOCTYPE html>...', Array) #10 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/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 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/functions.php(5309): ob_end_flush() #13 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/class-wp-hook.php(308): wp_ob_end_flush_all('') #14 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #15 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #16 /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-includes/load.php(1144): do_action('shutdown') #17 [internal function]: shutdown_action_hook() #18 {main} thrown in /home/clients/3c6097c543958ae472de92e66e53133e/web/oliwebconcept/wp-content/plugins/wp-rocket.3.4.1.2_licensed/vendor/matthiasmullie/minify/src/CSS.php on line 528