Fatal error crash page

Hey together, I been using your plugin for a few years and it worked really good. But now I got a fatal error out of it. As soon as I deactivate your Plugin, my site workes fine again. Can you please help me with that?

Here you can see the Error, which is showing up at in the “Query Monitor“:

Fatal error: Uncaught Error: call_user_func_array(): Argument #1 ($callback) must be a valid callback, no array or string given
in?…/wp-includes/class-wp-hook.php?on line?324

Call stack:

1. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
2. apply_filters()
   wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php:117
3. TheLib::_sess_init()
   wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php:240
4. TheLib::__construct()
   wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib-core.php:89
5. TheLib_Core::__construct()
   wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/core.php:114
6. TheLib3_Wrap::get_obj()
   wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/core.php:49
7. lib3()
   wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-cloning.php:72
8. CustomSidebarsCloning::__construct()
   wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-cloning.php:33
9. CustomSidebarsCloning::instance()
   wp-includes/class-wp-hook.php:324
10. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:348
11. WP_Hook::do_action()
    wp-includes/plugin.php:517
12. do_action()
    wp-content/plugins/custom-sidebars/inc/class-custom-sidebars.php:83
13. CustomSidebars::__construct()
    wp-content/plugins/custom-sidebars/inc/class-custom-sidebars.php:69
14. CustomSidebars::instance()
    wp-includes/class-wp-hook.php:324
15. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:348
16. WP_Hook::do_action()
    wp-includes/plugin.php:517
17. do_action()
    wp-includes/pluggable.php:48
18. wp_set_current_user()
    wp-includes/user.php:3634
19. _wp_get_current_user()
    wp-includes/pluggable.php:70
20. wp_get_current_user()
    wp-includes/l10n.php:98
21. get_user_locale()
    wp-includes/l10n.php:152
22. determine_locale()
    wp-includes/l10n.php:947
23. load_plugin_textdomain()
    wp-content/plugins/advanced-ads-responsive/classes/plugin.php:89
24. Advanced_Ads_Responsive_Plugin::load_plugin_textdomain()
    wp-content/plugins/advanced-ads-responsive/classes/plugin.php:60
25. Advanced_Ads_Responsive_Plugin::wp_plugins_loaded()
    wp-includes/class-wp-hook.php:324
26. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:348
27. WP_Hook::do_action()
    wp-includes/plugin.php:517
28. do_action()
    wp-settings.php:506
29. require_once()
    wp-config.php:90
30. require_once()
    wp-load.php:50
31. require_once()
    wp-admin/admin-ajax.php:22

Would be really happy to hear from you so I could go on using your Plugin…

Best regards

Oli

The page I need help with: [log in to see the link]