Internal Server error

Hello, unfortunately I have a problem with the Cyberpress plugin on my site. Every page that is related to Cyberpress shows an internal server error. The only error message I have found is this one: [12-Apr-2024 18:42:57 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetExists($id) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 128 [12-Apr-2024 18:42:57 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetGet($id) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 93 [12-Apr-2024 18:42:57 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetSet($id, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 74 [12-Apr-2024 18:42:57 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetUnset($id) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 138 [12-Apr-2024 18:42:58 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php:34) in /customers/c/0/e/distraction-league.de/httpd.www/wp-admin/includes/misc.php on line 1439 [12-Apr-2024 18:42:58 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php:34) in /customers/c/0/e/distraction-league.de/httpd.www/wp-includes/functions.php on line 7096 [12-Apr-2024 18:42:58 UTC] PHP Warning: Cannot modify header information – headers already sent by (output started at /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php:34) in /customers/c/0/e/distraction-league.de/httpd.www/wp-admin/admin-header.php on line 9 [12-Apr-2024 18:43:07 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetExists($id) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 128 [12-Apr-2024 18:43:07 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetGet($id) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 93 [12-Apr-2024 18:43:07 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetSet($id, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 74 [12-Apr-2024 18:43:07 UTC] PHP Deprecated: Return type of Carbon_Fields\Pimple\Container::offsetUnset($id) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /customers/c/0/e/distraction-league.de/httpd.www/wp-content/plugins/cyberpress/vendor/htmlburger/carbon-fields/core/Pimple/Container.php on line 138 Thank you for your help and have a nice Sunday! The page I need help with: [ log in to see the link] Hello, unfortunately the problem is still there. Are you still updating the plugin? Have a nice Sunday evening! Hi @distractionleague , We’ll check the plugin compatibility with the latest WP and PHP and release an update once all problems are fixed. Regards, Nikita. Hello @nko , thanks a lot! I’m really looking forward to it. Hi, Please update the plugin to version 2.5.5. We have updated the bundled libraries to ensure compatibility with WordPress 6.5 and PHP 8.3. Regards, Nikita. Hello, after the update everything works for me! Thank you very much for your efforts.