WordPress Login funktioniert nicht

Hallo Community,

ich wollte heute auf einer alten Webseite von mir die Datenschutzerklärung erneuern. Leider funktioniert der Login nicht. Ich erhalte folgende Fehlermeldung:

Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-content/plugins/acurax-social-media-widget/function.php on line 641 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/pomo/translations.php on line 208 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/pomo/translations.php on line 208 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/pomo/translations.php on line 208 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/pomo/translations.php on line 208 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-content/themes/angle/functions/functions.php on line 146 Notice: Die verwendete Konstruktoren-Methode für WP_Widget ist seit Version 4.3.0 veraltet! Verwende stattdessen
__construct()

. in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/functions.php on line 3568 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/pomo/translations.php on line 208 Deprecated: Function create_function() is deprecated in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/pomo/translations.php on line 208 Warning: Cannot modify header information – headers already sent by (output started at /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-config.php:1) in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-login.php on line 431 Warning: Cannot modify header information – headers already sent by (output started at /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-config.php:1) in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-login.php on line 444 Warning: Illegal string offset ‚remember‘ in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/user.php on line 41 Warning: Cannot assign an empty string to a string offset in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/user.php on line 41 Warning: Illegal string offset ‚user_login‘ in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/user.php on line 56 Fatal error: Uncaught Error: Cannot create references to/from string offsets in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/user.php:56 Stack trace: #0 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-login.php(806): wp_signon(“, “) #1 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-content/plugins/rename-wp-login/rename-wp-login.php(334): require_once(‚/mnt/web424/a1/…‘) #2 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/plugin.php(503): Rename_WP_Login->wp_loaded(“) #3 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-settings.php(374): do_action(‚wp_loaded‘) #4 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-config.php(86): require_once(‚/mnt/web424/a1/…‘) #5 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-load.php(37): require_once(‚/mnt/web424/a1/…‘) #6 /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-blog-header.php(12): require_once(‚/mnt/web424/a1/…‘) #7 /mnt/web424/a1/92/56877392/htdocs/assurancehero/index.php(17): require(‚/mnt/web424/a1/…‘) #8 {main} thro in /mnt/web424/a1/92/56877392/htdocs/assurancehero/wp-includes/user.php on line 56

Kann mir jemand sagen, wie ich das wieder hinbekomme? Vielen Dank im Voraus.

Die Seite, für die ich Hilfe brauche: [Anmelden, um den Link zu sehen]