Error Commands out of sync; wpassetcleanup

I have installed the plugin and it works perfectly, only when checking the log file of my site in wordpress it shows me the following error

Error Commands out of sync; you can’t run this command now de la base de datos de WordPress para la consulta SELECT option_value FROM wp_options WHERE option_name = ‘wpassetcleanup_critical_css_config’ LIMIT 1 realizada por shutdown_action_hook, do_action(‘shutdown’), WP_Hook->do_action, WP_Hook->apply_filters, wp_ob_end_flush_all, ob_end_flush, WpAssetCleanUp\OptimiseAssets\OptimizeCommon::WpAssetCleanUp\OptimiseAssets\{closure}, WpAssetCleanUp\OptimiseAssets\OptimizeCommon::alterHtmlSource, WpAssetCleanUp\OptimiseAssets\OptimizeCss::alterHtmlSource, apply_filters(‘wpacu_alter_source_for_critical_css’), WP_Hook->apply_filters, WpAssetCleanUpPro\OptimiseAssets\CriticalCssPro::alterHtmlSourceForCriticalCss, apply_filters(‘wpacu_critical_css’), WP_Hook->apply_filters, WpAssetCleanUpPro\OptimiseAssets\CriticalCssPro->showAnyCriticalCss, WpAssetCleanUpPro\OptimiseAssets\CriticalCssPro::getAllCriticalCssOptions, get_option`