Fatal Error after plugin upgrading to current version

Hello,
today I upgraded permalink manager plugin and now I cant login to Dashboard. Website is working fine. What should I do? How can I use the plugin and not to recieve this error?

I think that I did not upgrade the plugin more than year. The WordPress is version 5.4 I think.

After admin login I get:
Fatal error: Uncaught Error: Call to undefined function is_taxonomy_viewable() in /web/htdocs5/knihovna_secz/home/www/wp-content/plugins/permalink-manager/includes/core/permalink-manager-helper-functions.php:221 Stack trace: #0 /web/htdocs5/knihovna_secz/home/www/wp-content/plugins/permalink-manager/includes/core/permalink-manager-helper-functions.php(348): Permalink_Manager_Helper_Functions::get_disabled_taxonomies(true) #1 /web/htdocs5/knihovna_secz/home/www/wp-content/plugins/permalink-manager/includes/views/permalink-manager-uri-editor.php(46): Permalink_Manager_Helper_Functions::get_taxonomies_array('full') #2 /web/htdocs5/knihovna_secz/home/www/wp-includes/class-wp-hook.php(286): Permalink_Manager_Uri_Editor->add_admin_section(Array) #3 /web/htdocs5/knihovna_secz/home/www/wp-includes/plugin.php(203): WP_Hook->apply_filters(Array, Array) #4 /web/htdocs5/knihovna_secz/home/www/wp-content/plugins/permalink-manager/includes/core/permalink-manager-admin-functions.php(31): apply_filters('permalink_manag...', Array) #5 /we in /web/htdocs5/knihovna_secz/home/www/wp-content/plugins/permalink-manager/includes/core/permalink-manager-helper-functions.php on line 221

• This topic was modified 3 years, 7 months ago by honzajt.