Fatal error: Uncaught Error: Call to undefined method Composer\Autoload\ClassLoader::setClassMapAuthoritative() in /home/liefde1q/public_html/wp-content/plugins/mailchimp-for-wp/vendor/composer/autoload_real.php:34
Stack trace:
#0 /home/liefde1q/public_html/wp-content/plugins/mailchimp-for-wp/vendor/autoload.php(25): ComposerAutoloaderInit80d6ab236fb6085dfdecfd8ffd94dcde::getLoader()
#1 /home/liefde1q/public_html/wp-content/plugins/mailchimp-for-wp/mailchimp-for-wp.php(54): require_once('/home/liefde1q/...')
#2 /home/liefde1q/public_html/wp-includes/class-wp-hook.php(324): _mc4wp_load_plugin('')
#3 /home/liefde1q/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#4 /home/liefde1q/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /home/liefde1q/public_html/wp-settings.php(506): do_action('plugins_loaded')
#6 /home/liefde1q/public_html/wp-config.php(70): require_once('/home/liefde1q/...')
#7 /home/liefde1q/public_html/wp-load.php(50): require_once('/home/liefde1q/...')
# in /home/liefde1q/public_html/wp-content/plugins/mailchimp-for-wp/vendor/composer/autoload_real.php on line 34