Here’s the issue:
[08-Apr-2026 21:20:38 UTC] PHP Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method DiviLibShortcode_Admin::dls_filter_mce_button() cannot be called statically in /home/customho/public_html/wp-includes/class-wp-hook.php:343
Stack trace:
#0 /home/customho/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#1 /home/customho/public_html/wp-content/plugins/advanced-custom-fields/includes/fields/class-acf-field-wysiwyg.php(114): apply_filters()
#2 /home/customho/public_html/wp-content/plugins/advanced-custom-fields/includes/fields/class-acf-field-wysiwyg.php(147): acf_field_wysiwyg->get_toolbars()
#3 /home/customho/public_html/wp-includes/class-wp-hook.php(341): acf_field_wysiwyg->acf_enqueue_uploader()
#4 /home/customho/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#5 /home/customho/public_html/wp-includes/plugin.php(522): WP_Hook->do_action()
#6 /home/customho/public_html/wp-content/plugins/advanced-custom-fields/includes/assets.php(329): do_action()
#7 /home/customho/public_html/wp-content/plugins/advanced-custom-fields/includes/assets.php(348): ACF_Assets->enqueue_uploader()
#8 /home/customho/public_html/wp-includes/class-wp-hook.php(341): ACF_Assets->enqueue_scripts()
#9 /home/customho/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#10 /home/customho/public_html/wp-includes/plugin.php(522): WP_Hook->do_action()
#11 /home/customho/public_html/wp-admin/admin-header.php(123): do_action()
#12 /home/customho/public_html/wp-admin/edit-form-advanced.php(418): require_once(’/home/customho/…’)
#13 /home/customho/public_html/wp-admin/post-new.php(75): require(’/home/customho/…’)
#14 {main}
thrown in /home/customho/public_html/wp-includes/class-wp-hook.php on line 343
It seems that there is an issue with advanced-custom-fields plugin. Could you try disabling it?