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Warning: A non-numeric value encountered 2

Warning: A non-numeric value encountered in /srv/www/lypsonline.com/current/web/app/plugins/woocommerce/includes/abstracts/abstract-wc-product.php on line 940
Call Stack
#	Time	Memory	Function	Location
1	0.0080	354240	{main}( )	.../index.php:0
2	0.0117	356192	require( '/srv/www/lypsonline.com/current/web/wp/wp-blog-header.php' )	.../index.php:5
3	1.0468	28439728	require_once( '/srv/www/lypsonline.com/current/web/wp/wp-includes/template-loader.php' )	.../wp-blog-header.php:19
4	1.0585	28551848	apply_filters( )	.../template-loader.php:73
5	1.0585	28552248	WP_Hook->apply_filters( )	.../plugin.php:203
6	1.0591	28553800	App\{closure}( )	.../class-wp-hook.php:298
7	1.0615	28555384	App\template( )	.../filters.php:57
8	1.0615	28555384	Roots\Sage\Template\Blade->render( )	.../helpers.php:57
9	1.0692	28740552	Illuminate\View\View->render( )	.../Blade.php:51
10	1.0692	28740552	Illuminate\View\View->renderContents( )	.../View.php:85
11	1.0692	28740664	Illuminate\View\View->getContents( )	.../View.php:120
12	1.0692	28741040	Illuminate\View\Engines\PhpEngine->get( )	.../View.php:149
13	1.0692	28741040	Illuminate\View\Engines\PhpEngine->evaluatePath( )	.../PhpEngine.php:20
14	1.0700	28758216	include( '/srv/www/lypsonline.com/current/web/app/themes/sage/single-product.php' )	.../PhpEngine.php:42
15	1.0700	28758216	woocommerce_content( )	.../single-product.php:1
16	1.0724	28793808	wc_get_template_part( )	.../wc-template-functions.php:358
17	1.0763	28793936	load_template( )	.../wc-core-functions.php:173
18	1.0777	28804112	require( '/srv/www/lypsonline.com/current/web/app/plugins/woocommerce/templates/content-single-product.php' )	.../template.php:686
19	1.0916	28875944	do_action( )	.../content-single-product.php:65
20	1.0916	28876320	WP_Hook->do_action( )	.../plugin.php:453
21	1.0916	28876320	WP_Hook->apply_filters( )	.../class-wp-hook.php:323
22	1.0975	28886360	woocommerce_template_single_price( )	.../class-wp-hook.php:298
23	1.0975	28886360	wc_get_template( )	.../wc-template-functions.php:872
24	1.1008	28889528	include( '/srv/www/lypsonline.com/current/web/app/plugins/woocommerce/templates/single-product/price.php' )	.../wc-core-functions.php:203
25	1.1008	28889528	WC_Product->get_price_html( )	.../price.php:28
26	1.1013	28889528	WC_Product->get_display_price( )	.../abstract-wc-product.php:1012
27	1.1013	28889528	WC_Product->get_price_excluding_tax( )	.../abstract-wc-product.php:960