( ! ) Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'wp_cron' not found or invalid function name in /var/www/clients/client92/web266/web/wp-includes/plugin.php on line 525
Call Stack
#	Time	Memory	Function	Location
1	0.0008	232376	{main}( )	../index.php:0
2	0.0014	235648	require( '/var/www/clients/client92/web266/web/wp-blog-header.php' )	../index.php:17
3	0.0020	258856	require_once( '/var/www/clients/client92/web266/web/wp-load.php' )	../wp-blog-header.php:13
4	0.0025	271368	require_once( '/var/www/clients/client92/web266/web/wp-config.php' )	../wp-load.php:37
5	0.4360	534504	require_once( '/var/www/clients/client92/web266/web/wp-settings.php' )	../wp-config.php:52
6	1.5202	35248624	do_action( )	../wp-settings.php:393
7	1.6684	44844808	call_user_func_array:{/var/www/clients/client92/web266/web/wp-includes/plugin.php:525} ( )	../plugin.php:525

( ! ) Fatal error: Call to undefined function wp_next_scheduled() in /var/www/clients/client92/web266/web/wp-includes/update.php on line 656
Call Stack
#	Time	Memory	Function	Location
1	0.0008	232376	{main}( )	../index.php:0
2	0.0014	235648	require( '/var/www/clients/client92/web266/web/wp-blog-header.php' )	../index.php:17
3	0.0020	258856	require_once( '/var/www/clients/client92/web266/web/wp-load.php' )	../wp-blog-header.php:13
4	0.0025	271368	require_once( '/var/www/clients/client92/web266/web/wp-config.php' )	../wp-load.php:37
5	0.4360	534504	require_once( '/var/www/clients/client92/web266/web/wp-settings.php' )	../wp-config.php:52
6	1.5202	35248624	do_action( )	../wp-settings.php:393
7	1.6692	44845968	call_user_func_array:{/var/www/clients/client92/web266/web/wp-includes/plugin.php:525} ( )	../plugin.php:525
8	1.6692	44846112	wp_schedule_update_checks( )	../plugin.php:525