PHP7 check out error

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For every visitor there is a galaxy of errors...

[Sun Nov 14 15:48:41.186353 2021] [php7:warn] [pid 12507] [client 151.19.36.63:20033] PHP Warning: rmdir(/var/www/html/wp-content/cache/wpo-cache/www.visura.uno): Directory not empty in /var/www/html/wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php on line 879, referer: https://www.visura.uno/wp-admin/admin.php?page=wpo_cache [Sun Nov 14 15:48:41.186651 2021] [php7:warn] [pid 12507] [client 151.19.36.63:20033] PHP Warning: rmdir(/var/www/html/wp-content/cache/wpo-cache): Directory not empty in /var/www/html/wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php on line 879, referer: https://www.visura.uno/wp-admin/admin.php?page=wpo_cache [Sun Nov 14 16:39:55.513776 2021] [php7:error] [pid 13040] [client 54.175.255.218:34679] PHP Fatal error: Uncaught Error: Call to a member function get_meta() on bool in /var/www/html/wp-content/plugins/coinbase-commerce/class-wc-gateway-coinbase.php:346\nStack trace:\n#0 /var/www/html/wp-content/plugins/coinbase-commerce/class-wc-gateway-coinbase.php(299): WC_Gateway_Coinbase->_update_order_status()\n#1 /var/www/html/wp-includes/class-wp-hook.php(303): WC_Gateway_Coinbase->handle_webhook()\n#2 /var/www/html/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters()\n#3 /var/www/html/wp-inc