Price variation not shown next to “add to cart” button

https://wordpress.hesters.nl/webshop/

Selected only WooCommerce plugin
Problem not related to Theme (checked that)
Current theme: Top Shop Premium Child

Currently when there are variations, there has to be a price for that variation next to the “Add to Cart” button. But this price does not appear.
Also the text “CLEAR” does not appear.

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WordPress Omgeving
Home URL: https://wordpress.hesters.nl
Site URL: https://wordpress.hesters.nl
Versie: 2.6.13
Log Directory Beschrijfbaar: /var/www/vhosts/hesters.nl/wordpress.hesters.nl/wp-content/uploads/wc-logs/
WP versie: 4.7.1
WP Multisite: –
WP geheugenlimiet: 256 MB
WP debug mode: –
WP Cron:
Taal: nl_NL
Serveromgeving
Serverinformatie: Apache
PHP versie: 5.3.27 – Wij raden minimaal PHP-versie 5.6 aan. Bekijk: Hoe je PHP-versie bijwerken
PHP Post Max Size: 20 MB
PHP Time Limit: 60
PHP Max Input Vars: 1000
cURL Versie: 7.19.7, NSS/3.21 Basic ECC
SUHOSIN ge?stalleerd: –
MySQL versie: 5.5.34 – Wij adviseren een minimum PHP-versie 5.6. Bekijk: WordPress Benodigheden
Max Upload Grootte: 20 MB
Standaard Tijdzone is UTC:
fsockopen/cURL:
SoapClient:
DOMDocument:
GZip:
Multibyte String:
Remote Post:
Remote Get:
Database
WC database versie: 2.6.13
woocommerce_sessions
woocommerce_api_keys
woocommerce_attribute_taxonomies
woocommerce_downloadable_product_permissions
woocommerce_order_items
woocommerce_order_itemmeta
woocommerce_tax_rates
woocommerce_tax_rate_locations
woocommerce_shipping_zones
woocommerce_shipping_zone_locations
woocommerce_shipping_zone_methods
woocommerce_payment_tokens
woocommerce_payment_tokenmeta
MaxMind GeoIP Database: /var/www/vhosts/hesters.nl/wordpress.hesters.nl/wp-content/uploads/GeoIP.dat
Actieve plugins (8)
WooCommerce (nl) door Pronamic – 1.1.7
Breadcrumb NavXT door John Havlik – 5.6.0
Contact Form 7 door Takayuki Miyoshi – 4.6
Easy Theme and Plugin Upgrades door Chris Jean – 2.0.0
Meta Slider door Matcha Labs – 3.4.1
Page Builder by SiteOrigin door SiteOrigin – 2.4.21
SiteOrigin Widgets Bundle door SiteOrigin – 1.7.2
WooCommerce door WooThemes – 2.6.13
Instellingen
Forceer SSL: –
Valuta EUR (€)
Valuta positie left_space
Duizendtal scheidingsteken .
Decimaal scheidingsteken ,
Aantal decimalen 2
API
API Geactiveerd:
WC pagina’s
Winkel basis: #109 – /webshop/
Winkelwagen: #60 – /winkelmand/
Afrekenen: #61 – /afrekenen/
Mijn account: #62 – /mijn-account/
Indelingen
Product types: external (external), grouped (grouped), simple (simple), variable (variable)
Fatal error: Call to undefined function prepare_request() in /var/www/vhosts/hesters.nl/wordpress.hesters.nl/wp-content/themes/topshop-premium/update.php on line 82
Thema
Naam: TopShop Premium Child
Versie: 10.0.1.1484313310
URL van de maker: https://www.kairaweb.com/
Subthema:

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(sorry for this mess, but copy and paste didnot work ;-(