Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method wp_forex_rates::forex_rates_init() cannot be called statically in /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/class-wp-hook.php:303 Stack trace: #0 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #1 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #2 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/widgets.php(1809): do_action('widgets_init') #3 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/class-wp-hook.php(303): wp_widgets_init('') #4 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #5 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #6 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-settings.php(578): do_action('init') #7 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-config.php(81): require_once('/homepages/12/d...') #8 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-load.php(50): require_once('/homepages/12/d...') #9 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-blog-header.php(13): require_once('/homepages/12/d...') #10 /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/index.php(17): require('/homepages/12/d...') #11 {main} thrown in /homepages/12/d856043207/htdocs/clickandbuilds/ScibrokesTrading/wp-includes/class-wp-hook.php on line 303