Checkout has an infinite loading loop

Hello,

My woocommerce checkout doesn’t load at all, I’ve been searching and many people has the same problem as me, but I couldn’t find a proper solution.

Can you assist me on my problem?

Thank you.

### WordPress Environment ###

WC Version: 2.6.8
Log Directory Writable: ✔
WP Version: 4.6.1
WP Multisite: –
WP Memory Limit: 256 MB
WP Debug Mode: –
WP Cron: ✔
Language: en_US

### Server Environment ###

Server Info: nginx/1.10.0
PHP Version: 5.6.28-1+deb.sury.org~xenial+1
PHP Post Max Size: 100 MB
PHP Time Limit: 300
PHP Max Input Vars: 1000
cURL Version: 7.47.0
OpenSSL/1.0.2g

SUHOSIN Installed: –
Max Upload Size: 100 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

WC Database Version: 2.6.8
: 
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: ✔

### Active Plugins (21) ###

ManageWP - Worker: by ManageWP – 4.2.12
LayerSlider WP: by Kreatura Media – 5.6.9
Akismet: by Automattic – 3.2
Archived Post Status: by Frankie Jarrett – 0.3.6
Black Studio TinyMCE Widget: by Black Studio – 2.3.1
Coming Soon Page & Maintenance Mode by SeedProd: by SeedProd – 5.0.4
Contact Form 7: by Takayuki Miyoshi – 4.6
Duplicate Post: by Enrico Battocchi – 3.0.3
Easy Google Fonts: by Titanium Themes – 1.4.1
Force Regenerate Thumbnails: by Pedro Elsner – 2.0.6
Google Analytics Dashboard for WP: by Alin Marcu – 4.9.4
WPBakery Visual Composer: by Michael M - WPBakery.com – 4.12.1
Slider Revolution: by ThemePunch – 5.3.1
Shortcodes Ultimate: by Vladimir Anokhin – 4.9.9
Page Builder by SiteOrigin: by SiteOrigin – 2.4.19
SiteOrigin Widgets Bundle: by SiteOrigin – 1.7.2
Spacer: by Justin Saad – 3.0.4
Testimonials Widget: by Axelerant – 3.3.4
Title Remover: by Brittany Internet Services – 1.0
WooCommerce: by WooThemes – 2.6.8
WP-PageNavi: by Lester 'GaMerZ' Chan – 2.91

### Settings ###

Force SSL: –
Currency: EUR (€)
Currency Position: left_space
Thousand Separator: ,
Decimal Separator: .
Number of Decimals: 2

### API ###

API Enabled: ✔

### WC Pages ###

Shop Base: #1312 - /shop/
Cart: #121 - /cart/
Checkout: #122 - /checkout/
My Account: #123 - /my-account/

### Taxonomies ###

Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

### Theme ###

Name: Betheme
Version: 15.8
Author URL: http://muffingroup.com
Child Theme: ❌ – If you're modifying WooCommerce on a parent theme you didn't build personally
then we recommend using a child theme. See: How to create a child theme

WooCommerce Support: ✔

### Templates ###

Overrides: betheme/woocommerce/archive-product.php
betheme/woocommerce/cart/cart-empty.php
betheme/woocommerce/cart/cart.php
betheme/woocommerce/cart/mini-cart.php
betheme/woocommerce/content-product.php
betheme/woocommerce/content-single-product.php
betheme/woocommerce/loop/loop-end.php
betheme/woocommerce/loop/loop-start.php
betheme/woocommerce/loop/no-products-found.php
betheme/woocommerce/loop/orderby.php
betheme/woocommerce/loop/pagination.php
betheme/woocommerce/loop/price.php
betheme/woocommerce/loop/rating.php
betheme/woocommerce/loop/result-count.php
betheme/woocommerce/loop/sale-flash.php
betheme/woocommerce/notices/error.php
betheme/woocommerce/notices/notice.php
betheme/woocommerce/notices/success.php
betheme/woocommerce/single-product/add-to-cart/external.php
betheme/woocommerce/single-product/meta.php
betheme/woocommerce/single-product/price.php
betheme/woocommerce/single-product/product-attributes.php
betheme/woocommerce/single-product/product-image.php
betheme/woocommerce/single-product/product-thumbnails.php
betheme/woocommerce/single-product/related.php
betheme/woocommerce/single-product/sale-flash.php
betheme/woocommerce/single-product/share.php
betheme/woocommerce/single-product/short-description.php
betheme/woocommerce/single-product/tabs/additional-information.php
betheme/woocommerce/single-product/tabs/description.php
betheme/woocommerce/single-product/tabs/tabs.php
betheme/woocommerce/single-product/title.php
betheme/woocommerce/single-product/up-sells.php
betheme/woocommerce/single-product.php