Series Listing Shortcode

{"message":{"type":1,"message":"Uncaught Error: [] operator not supported for strings in \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-content\/themes\/videopro\/inc\/core\/data-functions.php:603\nStack trace:\n#0 \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-content\/plugins\/cactus-video\/shortcode\/series-listing.php(56): videopro_get_tptn_pop_posts(Array)\n#1 \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-includes\/shortcodes.php(343): videopro_series_listing_sc(Array, '', 'v_series')\n#2 [internal function]: do_shortcode_tag(Array)\n#3 \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-includes\/shortcodes.php(218): preg_replace_callback('\/\\\\[(\\\\[?)(v_seri...', 'do_shortcode_ta...', '[v_series condi...')\n#4 \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-content\/plugins\/js_composer\/include\/helpers\/helpers.php(236): do_shortcode('[v_series condi...')\n#5 \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-content\/plugins\/js_composer\/include\/templates\/shortcodes\/vc_column.php(94): wpb_js_remove_wpautop('[v_series condi...')\n#6 \/home\/cwscwsla\/thefamilyfilmawards.com\/wp-content\/plugins\/js_comp","file":"\/home\/cwscwsla\/thefamilyfilmawards.com\/wp-content\/themes\/videopro\/inc\/core\/data-functions.php","line":603},"error":1}