Fatal error: Uncaught Error: … class-wp-customize-widgets.php:544

hi Guys,

We are building a new site at the moment, any time I open the customiser I get the error below.

This happens even when all plugins are deactivated except tagDiv Composer and using Twentytwentythree theme. Any idea what could be happening?

Fatal error: Uncaught Error: Call to a member function preview() on null in /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-customize-widgets.php:544 Stack trace: #0 /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-customize-widgets.php(355): WP_Customize_Widgets->customize_register() #1 /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-hook.php(308): WP_Customize_Widgets->schedule_customize_register(Object(WP_Customize_Manager)) #2 /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #3 /usr/www/users/lavane/tipp-fm/live/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-customize-manager.php(934): do_action('customize_regis...', Object(WP_Customize_Manager)) #5 /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-hook.php(308): WP_Customize_Manager->wp_loaded('') #6 /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #7 /usr/www/ in /usr/www/users/lavane/tipp-fm/live/wp-includes/class-wp-customize-widgets.php on line 544

it is the latest, I’ve also re-installed it. they disappear when TD Composer is active.
d

Hi Bettina,

No, I installed the theme afresh, the plugin gives the same error with twenetytwentythree, I’ve also updated the plugin.

I can’t explain this one.

David