Funciones con fallos después de un cambio de servidor

Buenas, acabo de hacer un cambio de servidor a una de mis webs, hasta ahora estaba trabajando con ella en el servidor de pruebas que tengo pero ahora he cambiado al servidor final con dominio definitivo.

La cuestión es que todo funciona bien excepto la personalización CSS adicional y la creación de entradas en el blog.

Me da los siguientes errores

-Personalización de CCS adicional: Parece que algo ha salido mal. Espera un par de segundos y vuelve a intentarlo.

-Creación de entradas: Ha habido un error crítico en esta web. Por favor, comprueba la bandeja de entrada del correo electrónico del administrador de tu sitio para obtener instrucciones.

Alguien le ha pasado antes algo de esto?

Os pongo lo que me han pasado del servidor

[Wed Apr 24 12:40:23.281496 2024] [proxy_fcgi:error] [pid 14069:tid 140691485177600] [client 2.136.56.127:33450]
AH01071: Got error '
PHP message: PHP Warning: Attempt to read property "ID" on null in /home/battek/www/wp-includes/post.php on line 7555;
PHP message: PHP Warning: Attempt to read property "ID" on null in /home/battek/www/wp-includes/post.php on line 7556;
PHP message: PHP Warning: Attempt to read property "ID" on null in /home/battek/www/wp-includes/post.php on line 7556;
PHP message: PHP Warning: Attempt to read property "ID" on null in /home/battek/www/wp-includes/post.php on line 7567;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/post.php on line 7575;
PHP message: PHP Warning: Attempt to read property "post_type" on nullin /home/battek/www/wp-includes/post.php on line 7575;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/post.php on line 7575;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/post.php on line 7580;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/post.php on line 7581;
PHP message: PHP Warning: Attempt to read property "ID" on null in /home/battek/www/wp-includes/post.php on line 7585;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/post.php on line 7840;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/nav-menu.php on line 1121;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/theme.phpon line 3636;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/theme.php on line 3862;
PHP message: PHP Warning: Attempt to read property "post_type" on null in /home/battek/www/wp-includes/post.php on line 5516;
PHP message: PHP Warning: Attempt to read property "ID" on null in /home/battek/www/wp-includes/post.php on line 5516;
PHP message: PHP Warning: Attempt to read property "post_type" on null in/home/battek/www/wp-includes/post.php on line 4817;
PHP message: PHP Warning: Attempt to read property "post_type"on null in /home/battek/www/wp-content/plugins/qode-framework/inc/common/modules/meta-boxes/core/class-qodeframeworkoptionsmeta.php on line 73;
PHP message: PHP Fatal error: Uncaught TypeError: Elementor\TemplateLibrary\Source_Local::on_save_post(): Argument #2 ($post) must be of type WP_Post, null given, called in /home/battek/www/wp-includes/class-wp-hook.php on line 326 and defined in /home/battek/www/wp-content/plugins/elementor/includes/template-library/sources/local.php:1114\nStack trace:\n#0 /home/battek/www/wp-includes/class-wp-hook.php(326): Elementor\TemplateLibrary\Source_Local->on_save_post(0, NULL)\
n#1 /home/battek/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)\
n#2 /home/battek/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)\
n#3 /home/battek/www/wp-includes/post.php(4828): do_action('save_post', 0, NULL, false)\
n#4 /home/battek/www/wp-includes/class-wp-customize-manager.php(2980): wp_insert_post(Array, true)\
n#5 /home/battek/www/wp-includes/class-wp-customize-manager.php(2525): WP_Customize_Manager->save_changeset_post(Array)\
n#6 /home/battek/www/wp-includes/class-wp-hook.php(324): WP_Customize_Manage…', referer: https://battek.es/wp-admin/customize.php?theme=expertise&return=https%3A%2F%2Fbattek.es%2Fwp-admin%2Fthemes.php

WordPress versión 6.5.2

Tema activo: Expertise (versión 1.0)

Plugin actual: Elementor (versión 3.19.3)

PHP versión 8.2.17

Gracias por vuestra ayuda