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Fatal error: Uncaught Error: Call to undefined function get_classic_theme_supports_block_editor_settings() in /home/lisansio/public_html/wp-includes/class-wp-theme-json-resolver.php:333 Stack trace: #0 /home/lisansio/public_html/wp-includes/class-wp-theme-json-resolver.php(668): WP_Theme_JSON_Resolver::get_theme_data() #1 /home/lisansio/public_html/wp-includes/global-styles-and-settings.php(80): WP_Theme_JSON_Resolver::get_merged_data('theme') #2 /home/lisansio/public_html/wp-includes/fonts/class-wp-font-face-resolver.php(29): wp_get_global_settings() #3 /home/lisansio/public_html/wp-includes/fonts.php(46): WP_Font_Face_Resolver::get_fonts_from_theme_json() #4 /home/lisansio/public_html/wp-includes/class-wp-hook.php(341): wp_print_font_faces('') #5 /home/lisansio/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array) #6 /home/lisansio/public_html/wp-includes/plugin.php(522): WP_Hook->do_action(Array) #7 /home/lisansio/public_html/wp-includes/general-template.php(3197): do_action('wp_head') #8 in /home/lisansio/public_html/wp-includes/class-wp-theme-json-resolver.php on line 333