WP down… Viele Fehler

Hallo,

ich tue nun schon einige Zeit rum, google oder Foren helfen wir nicht weiter. Bei mir kommt, beim anklicken eines Beitrags, immer ein Fehler. Ich komme auch nicht in die Admin Konosole

Deprecated: Return type of WP_Theme::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/9/d24061424/htdocs/2019Fotopage/wp-includes/class-wp-theme.php on line 505

Deprecated: Return type of WP_Theme::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/9/d24061424/htdocs/2019Fotopage/wp-includes/class-wp-theme.php on line 546

Deprecated: Return type of WP_Theme::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/9/d24061424/htdocs/2019Fotopage/wp-includes/class-wp-theme.php on line 484

Deprecated: Return type of WP_Theme::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/9/d24061424/htdocs/2019Fotopage/wp-includes/class-wp-theme.php on line 493

Warning: Private methods cannot be final as they are never overridden by other classes in /homepages/9/d24061424/htdocs/2019Fotopage/wp-includes/class-wp-session-tokens.php on line 69

Fatal error: Array and string offset access syntax with curly braces is no longer supported in /homepages/9/d24061424/htdocs/2019Fotopage/wp-includes/script-loader.php on line 706

Hat jemand einen Tip?`Vielen Dank

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