Table Creation and writing non working on live site

functions.php

<?php
/*
* Create Saved Orders Custom Table
*/
function woo_create_saved_orders_data_table() {

	global $wpdb;
	$charset_collate = $wpdb->get_charset_collate();
	$table_name = $wpdb->prefix . 'woocommerce_saved_orders';

	if ( $wpdb->get_var( "SHOW TABLES LIKE '$table_name'" ) != $table_name ) {
		
		$sql = 'CREATE TABLE ' . $table_name . '(
		id int(10) UNSIGNED AUTO_INCREMENT,
		post_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
		products_data LONGTEXT,
		cart_name LONGTEXT,
		user_id int(10),
		PRIMARY KEY (id)
		) ENGINE=InnoDB DEFAULT CHARSET=utf8;';
		
		require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
		dbDelta( $sql );
		
		add_option( 'woo_saved_orders_db_version', '1.0');
		
	}
 
}
add_action( 'init', 'woo_create_saved_orders_data_table', 1 );

/* 
* Creates The Save Cart Button
*/
function woo_save_cart_button() { 
	global $woocommerce;
	$cart_contents = $woocommerce->cart->get_cart();
	$account_url = get_permalink(get_option( 'woocommerce_myaccount_page_id' ));

	if (isset($_POST['submit'])) {
		
		global $woocommerce;
		global $wpdb;
		global $current_user;

		if (is_user_logged_in()) {
			$user_id = $current_user->ID;
			$cart_contents = $woocommerce->cart->get_cart();
			$cart = serialize($cart_contents);
			$cartname = $_POST['cartname'];
			$table_name = $wpdb->prefix . 'woocommerce_saved_orders';

			// Update database
			$wpdb->insert( $table_name, array(
				'products_data'   => $cart,
				'cart_name'   => $cartname,
				'user_id'    => $user_id
			) );
			
		}
	}

	echo '<div id="save-cart">';

	echo '<form method="POST" action="' . $_SERVER["PHP_SELF"] . '">';
		echo 'Cart Name: <input type="text" name="cartname">';
		echo '<input type="submit" name="submit" value="Save Cart">';
	echo '</form>';
	
	echo '</div>';
	
	?>
	<?php

}
add_action( 'woocommerce_cart_collaterals', 'woo_save_cart_button');