Fatal error: Uncaught ArgumentCountError: Too few arguments to function WP_Widget::__construct(), 0 passed in /customers/a/1/8/dentalcareab.se/httpd.www/wp-includes/class-wp-widget-factory.php on line 61 and at least 2 expected in /customers/a/1/8/dentalcareab.se/httpd.www/wp-includes/class-wp-widget.php:162
Stack trace:
#0 /customers/a/1/8/dentalcareab.se/httpd.www/wp-includes/class-wp-widget-factory.php(61): WP_Widget->__construct()
#1 /customers/a/1/8/dentalcareab.se/httpd.www/wp-includes/widgets.php(115): WP_Widget_Factory->register('Invent_Widget_R...')
#2 /customers/a/1/8/dentalcareab.se/httpd.www/wp-content/themes/clear-theme/library/Invent/Widgets.php(466): register_widget('Invent_Widget_R...')
#3 /customers/a/1/8/dentalcareab.se/httpd.www/wp-content/themes/clear-theme/functions.php(33): Invent_Widgets->registerWidgets()
#4 /customers/a/1/8/dentalcareab.se/httpd.www/wp-settings.php(514): include('/customers/a/1/...')
#5 /customers/a/1/8/dentalcareab.se/httpd.www/wp-config.php(90): require_once('/customers/a/1/...')
#6 /customers/a/1/8/dentalcareab.se/httpd.www/wp-load.php(37): require_once('/customers/a/1/...')
#7 /customers/a/1/8/dentalcareab.se/httpd.www/wp-blog-header.php(13): require_once('/customers/a/1/...')
#8 /customers/a/1/8/dentalcareab.se/httpd.www/index.php(17): require('/customers/a/1/...')
#9 {main}
  thrown in /customers/a/1/8/dentalcareab.se/httpd.www/wp-includes/class-wp-widget.php on line 162