Fatal error: Uncaught Error: Call to undefined function

I have a fatal error on my website:
Fatal error: Uncaught Error: Call to undefined function powerpress_get_settings() in /var/www/web26443472/html/erwartet2018/wp-content/plugins/powerpress/powerpress-player.php:164 Stack trace: #0 /var/www/web26443472/html/erwartet2018/wp-includes/shortcodes.php(356): powerpress_shortcode_handler(Array, '', 'powerpress') #1 [internal function]: do_shortcode_tag(Array) #2 /var/www/web26443472/html/erwartet2018/wp-includes/shortcodes.php(228): preg_replace_callback('/\\[(\\[?)(powerp...', 'do_shortcode_ta...', '<p>\xC2\xA0</p>\n<p st...') #3 /var/www/web26443472/html/erwartet2018/wp-content/plugins/themify-ptb/includes/class-ptb-cmb-base.php(524): do_shortcode('<p>\xC2\xA0</p>\n<p st...') #4 /var/www/web26443472/html/erwartet2018/wp-content/plugins/themify-ptb/templates/field--custom_text.php(20): PTB_CMB_Base::format_text('<p>\xC2\xA0</p>\n<p st...', true) #5 /var/www/web26443472/html/erwartet2018/wp-content/plugins/themify-ptb/includes/class-ptb-form-ptt-them.php(1002): include('/var/www/web264...') #6 /var/www/web26443472 in /var/www/web26443472/html/erwartet2018/wp-content/plugins/powerpress/powerpress-player.php on line 164

I’m not sure, what the problem is, because I didn’t see any updates the last days, that could have caused this error. Everything was fine until yesterday… 🙁

I hope you might have a solution. 🙂

Best regards,

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