HTTP ERROR 500-Woocommerce question

Hi Mike,
thank you for your answer.

nope, I dont have that extension.

I have seen that on my site woocommerce> system status> ……
the following (copy/paste)

=============================================

### WordPress Environment ###

Home URL: http://giftempire.es
Site URL: http://giftempire.es
WC Version: 2.6.5
Log Directory Writable: ✔
WP Version: 4.6.1
WP Multisite: –
WP Memory Limit: 128 MB
WP Debug Mode: –
WP Cron: ✔
Language: es_ES

### Server Environment ###

Server Info: Apache
PHP Version: ❌ 5.5.32 – Recomendamos como mínimo la versión PHP 5.6. Ver: Cómo actualizar tu versión de PHP
PHP Post Max Size: 55 MB
PHP Time Limit: 60
PHP Max Input Vars: 1000
cURL Version: 7.38.0
OpenSSL/1.0.1e

SUHOSIN Installed: –
MySQL Version: 5.6.33
Max Upload Size: 55 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Publicación remota: ✔
Obtención remota: ✔

### Database ###

WC Database Version: 2.6.5
:
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 (25) ###

Akismet: por Automattic – 3.2
All In One SEO Pack: por Michael Torbert – 2.3.10.2
All In One WP Security: por Tips and Tricks HQ
Peter
Ruhul
Ivy – 4.1.7

Display Widgets: por Strategy11 – 2.05
Flatsome Simple Video Replace: por Nolan Campbell – 1
Google Analytics Dashboard para WP: por Alin Marcu – 4.9.3.2
Loco Translate: por Tim Whitlock – 2.0.7
MailChimp para WordPress: por ibericode – 4.0.6
Nextend Facebook Connect: por Roland Soos – 1.5.9
Ninja Forms: por The WP Ninjas – 3.0.11
Redsys WooCommerce: por Redsys – 2.8.4
Regenerate Thumbnails: por Alex Mills (Viper007Bond) – 2.2.6
W3 Total Cache: por Frederick Townes – 0.9.5.1
WooCommerce – All in One SEO Pack: por Visser Labs – 1.3.4
Descuentos por volumen en WooCommerce: por Rene Puchinger – 2.4.2
MRW: por TRiBi – 1.0.0
WOOF – WooCommerce Products Filter: por realmag777 – 2.1.3.4
WooCommerce TM Extra Product Options: por themecomplete – 4.3.4
WooCommerce: por WooThemes – 2.6.5
WooSidebars: por WooThemes – 1.4.3
Importador de WordPress: por wordpresspuntoorg – 0.6.3
WP Instagram Widget: por Scott Evans – 1.9.8
Modo de Mantenimiento WP: por Designmodo – 2.0.8
YITH WooCommerce Ajax Search: por YITHEMES – 1.4.1
YITH WooCommerce Wishlist: por YITHEMES – 2.0.16

### Settings ###

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

### API ###

API Enabled: ✔

### WC Pages ###

Base de la tienda: ❌ Página sin definir
Carrito: #8 – /carro/
Finalizar compra: #9 – /finalizar-comprar/
Mi cuenta: #10 – /mi-cuenta/

### Taxonomies ###

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

### Theme ###

Name: Flatsome
Version: 2.8.5
Author URL: http://www.uxthemes.com/
Child Theme: ❌ – Si estás modificando WooCommerce en un tema padre que no has creado personalmente
te recomendamos utilizar un tema hijo. Ver: : Cómo crear un tema hijo

WooCommerce Support: ✔

### Templates ###

Overrides: flatsome/woocommerce/archive-product.php
flatsome/woocommerce/cart/cart.php
flatsome/woocommerce/checkout/form-checkout.php
flatsome/woocommerce/content-product.php versión2.5.0 no está actualizado. La versión del sistema es2.6.1
flatsome/woocommerce/content-product_cat.php versión2.5.2 no está actualizado. La versión del sistema es2.6.1
flatsome/woocommerce/content-single-product.php
flatsome/woocommerce/global/breadcrumb.php
flatsome/woocommerce/global/wrapper-end.php
flatsome/woocommerce/global/wrapper-start.php
flatsome/woocommerce/loop/loop-end.php
flatsome/woocommerce/loop/loop-start.php
flatsome/woocommerce/loop/orderby.php
flatsome/woocommerce/loop/pagination.php
flatsome/woocommerce/loop/sale-flash.php
flatsome/woocommerce/myaccount/form-login.php versión2.2.6 no está actualizado. La versión del sistema es2.6.0
flatsome/woocommerce/notices/error.php
flatsome/woocommerce/notices/success.php
flatsome/product-searchform.php
flatsome/woocommerce/single-product/add-to-cart/grouped.php
flatsome/woocommerce/single-product/add-to-cart/simple.php
flatsome/woocommerce/single-product/add-to-cart/variable.php
flatsome/woocommerce/single-product/add-to-cart/variation-add-to-cart-button.php
flatsome/woocommerce/single-product/price.php
flatsome/woocommerce/single-product/product-image.php versión2.0.14 no está actualizado. La versión del sistema es2.6.3
flatsome/woocommerce/single-product/product-thumbnails.php versión2.3.0 no está actualizado. La versión del sistema es2.6.3
flatsome/woocommerce/single-product/related.php
flatsome/woocommerce/single-product/review.php versión2.5.0 no está actualizado. La versión del sistema es2.6.0
flatsome/woocommerce/single-product/sale-flash.php
flatsome/woocommerce/single-product/share.php
flatsome/woocommerce/single-product/short-description.php
flatsome/woocommerce/single-product/tabs/additional-information.php
flatsome/woocommerce/single-product/tabs/description.php
flatsome/woocommerce/single-product/tabs/tabs.php
flatsome/woocommerce/single-product/title.php
flatsome/woocommerce/single-product/up-sells.php
flatsome/woocommerce/single-product-reviews.php
flatsome/woocommerce/single-product.php
=================================================================

Do you know how to solve this?

If I go to a previous version of woocommerce, would I loose the database?
Thanks for everything,

Isa