Fatal error after updatind php version

I was trying to update php from 7.4 to 8.3 and my site crashed. I get this error code.

Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method Mfields Plus_One::load_textdomain() cannot be called statically in /home/yordwaid/public_html/wp-includes/class-wp-hook.php:324 Stack trace: #0 /home/yordwaid/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #1 /home/yordwaid/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #2 /home/yordwaid/public_html/wp-settings.php(727): do_action(‘init’) #3 /home/yordwaid/public_html/wp-config.php(60): require_once(‘/home/yordwaid/-) #4 /home/yordwaid/public_html/wp-load.php(50): require_once(/home/yordwaid/.’) #5 /home/yordwaid/public_html/wp-blog-header.php(13): require_once(‘/home/yordwaid/…’) #6 /home/yordwaid/public_html/index.php(17): require(‘/home/yordwaid/…’) #7 (main) thrown in /home/yordwaid/public_html/wp-includes/class-wp-hook.php on line 324

I guess a plugin cousing it but wich one could be?