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Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /folkoutdoor.com/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php:528 Stack trace: #0 /folkoutdoor.com/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php(528): implode(Array, '|') #1 /folkoutdoor.com/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php(314): MatthiasMullie\Minify\CSS->shortenColors('.wcs-recurring-...') #2 /folkoutdoor.com/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/Minify.php(111): MatthiasMullie\Minify\CSS->execute(NULL) #3 /folkoutdoor.com/wp-content/plugins/wp-rocket/inc/classes/optimization/CSS/class-combine.php(223): MatthiasMullie\Minify\Minify->minify() #4 /folkoutdoor.com/wp-content/plugins/wp-rocket/inc/classes/optimization/CSS/class-combine.php(171): WP_Rocket\Optimization\CSS\Combine->minify(Array, '/folkoutdoor.co...') #5 /folkoutdoor.com/wp-content/plugins/wp-rocket/inc/classes/optimization/CSS/class-combine.php(110): WP_Rocket\Optimization\CSS\Combine->combine(Array) #6 /folkoutdoor.com/wp-content/plugins/wp-rocket/inc/classes/subscriber/Optimization/class-abstract-minify-subscriber.php(85): WP_Rocket\Optimization\CSS\Combine->optimize('\n<!DOCTYPE html...') #7 /folkoutdoor.com/wp-content/plugins/wp-rocket/inc/classes/subscriber/Optimization/class-minify-css-subscriber.php(44): WP_Rocket\Subscriber\Optimization\Minify_Subscriber->optimize('\n<!DOCTYPE html...') #8 /folkoutdoor.com/wp-includes/class-wp-hook.php(307): WP_Rocket\Subscriber\Optimization\Minify_CSS_Subscriber->process('\n<!DOCTYPE html...') #9 /folkoutdoor.com/wp-includes/plugin.php(191): WP_Hook->apply_filters('\n<!DOCTYPE html...', Array) #10 /folkoutdoor.com/wp-content/plugins/wp-rocket/inc/classes/Buffer/class-optimization.php(94): apply_filters('rocket_buffer', '\n<!DOCTYPE html...') #11 [internal function]: WP_Rocket\Buffer\Optimization->maybe_process_buffer('\n<!DOCTYPE html...', 9) #12 /folkoutdoor.com/wp-includes/functions.php(5275): ob_end_flush() #13 /folkoutdoor.com/wp-includes/class-wp-hook.php(307): wp_ob_end_flush_all('') #14 /folkoutdoor.com/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #15 /folkoutdoor.com/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #16 /folkoutdoor.com/wp-includes/load.php(1102): do_action('shutdown') #17 [internal function]: shutdown_action_hook() #18 {main} thrown in /folkoutdoor.com/wp-content/plugins/wp-rocket/vendor/matthiasmullie/minify/src/CSS.php on line 528