<br />
<b>Warning</b>:  include_once(): Failed opening '/home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-content/plugins/wp-optimize/cache/file-based-page-cache.php' for inclusion (include_path='.:/opt/alt/php74/usr/share/pear') in <b>/home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-content/advanced-cache.php</b> on line <b>58</b><br />
serializes the array into a JSON string and generates a hash
 * that serves as a unique identifier. Optionally, a prefix can be added to
 * the generated ID for context or categorization.
 *
 * @since 6.8.0
 *
 * @param array  $data   The input array to generate an ID from.
 * @param string $prefix Optional. A prefix to prepend to the generated ID. Default ''.
 *
 * @return string The generated unique ID for the array.
 */
function wp_unique_id_from_values( array $data, string $prefix = '' ): string {
	if ( empty( $data ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: %s: parameter name. */
				__( 'The %s argument must not be empty.' ),
				'$data'
			),
			'6.8.0'
		);
	}
	$serialized = wp_json_encode( $data );
	$hash       = substr( md5( $serialized ), 0, 8 );
	return $prefix . $hash;
}
<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function is_blog_installed() in /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/load.php:939
Stack trace:
#0 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-settings.php(176): wp_not_installed()
#1 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-config.php(78): require_once('/home/kordian1/...')
#2 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-load.php(50): require_once('/home/kordian1/...')
#3 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-blog-header.php(13): require_once('/home/kordian1/...')
#4 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/index.php(17): require('/home/kordian1/...')
#5 {main}
  thrown in <b>/home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/load.php</b> on line <b>939</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function get_option() in /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/l10n.php:63
Stack trace:
#0 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/l10n.php(166): get_locale()
#1 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/l10n.php(954): determine_locale()
#2 /home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#3 [internal function]: WP_Fatal_Error_Handler-&gt;handle()
#4 {main}
  thrown in <b>/home/kordian1/domains/rocknabagnie.pl/public_html/sklep/wp-includes/l10n.php</b> on line <b>63</b><br />