Hola, @fernanda091. Para obtener más detalles del error te pediría que nos dieras algo de información sobre tu sitio. Instala, por favor, este plugin en tu sitio https://es.wordpress.org/plugins/health-check/
Una vez instalado y activado, ve a Herramientas -> Salud del Sitio -> Información y pulsa en Copiar información del sitio al portapapeles.
Luego, pega esa información en un mensaje de este hilo, resultaría algo así:
### wp-core ###
version: 5.3.2
site_language: es_ES
user_language: es_ES
permalink: /%year%/%monthnum%/%day%/%postname%/
https_status: false
user_registration: 0
default_comment_status: open
multisite: false
user_count: 1
dotorg_communication: true
### wp-paths-sizes ###
wordpress_path: /Users/josearcoscampos/Sites/woocommerce
wordpress_size: loading...
uploads_path: /Users/josearcoscampos/Sites/woocommerce/wp-content/uploads
uploads_size: loading...
themes_path: /Users/josearcoscampos/Sites/woocommerce/wp-content/themes
themes_size: loading...
plugins_path: /Users/josearcoscampos/Sites/woocommerce/wp-content/plugins
plugins_size: loading...
database_size: loading...
total_size: loading...
### wp-active-theme ###
name: Storefront (storefront)
version: 2.5.3
author: Automattic
author_website: https://woocommerce.com/
parent_theme: none
theme_features: post-thumbnails, automatic-feed-links, custom-logo, menus, html5, custom-background, custom-header, site-logo, title-tag, customize-selective-refresh-widgets, wp-block-styles, align-wide, editor-styles, editor-font-sizes, editor-style, responsive-embeds, woocommerce, wc-product-gallery-zoom, wc-product-gallery-lightbox, wc-product-gallery-slider, starter-content, widgets
theme_path: /Users/josearcoscampos/Sites/woocommerce/wp-content/themes/storefront
### wp-themes-inactive (4) ###
Twenty Nineteen: version: 1.4, author: el equipo de WordPress
Twenty Seventeen: version: 2.2, author: El equipo WordPress
Twenty Sixteen: version: 2.0, author: el equipo WordPress
Twenty Twenty: version: 1.1, author: El equipo de WordPress
### wp-plugins-active (3) ###
Health Check & Troubleshooting: version: 1.4.2, author: The WordPress.org community
WooCommerce: version: 3.9.0, author: Automattic
WordPress Importer: version: 0.6.4, author: wordpressdotorg
### wp-plugins-inactive (2) ###
Akismet Anti-Spam: version: 4.1.3, author: Automattic
Hello Dolly: version: 1.7.2, author: Matt Mullenweg
### wp-media ###
image_editor: WP_Image_Editor_GD
imagick_module_version: No está disponible
imagemagick_version: No está disponible
gd_version: bundled (2.1.0 compatible)
ghostscript_version: not available
### wp-server ###
server_architecture: Darwin 19.2.0 x86_64
httpd_software: Apache
php_version: 7.3.8 64bit
php_sapi: apache2handler
max_input_variables: 1000
time_limit: 30
memory_limit: 256M
max_input_time: 60
upload_max_size: 32M
php_post_max_size: 8M
curl_version: 7.65.1 OpenSSL/1.0.2o
suhosin: false
imagick_availability: false
server-headers:
date: Thu, 23 Jan 2020 06:30:22 GMT
server: Apache
x-powered-by: PHP/7.3.8
expires: Wed, 11 Jan 1984 05:00:00 GMT
cache-control: no-transform, no-cache, no-store, must-revalidate
link: Array
content-type: text/html; charset=UTF-8
htaccess_extra_rules: false
### wp-database ###
extension: mysqli
server_version: 5.7.26
client_version: mysqlnd 5.0.12-dev - 20150407 - $Id: 7cc7cc96e675f6d72e5cf0f267f48e167c2abb23 $
### wp-constants ###
WP_HOME: undefined
WP_SITEURL: undefined
WP_CONTENT_DIR: /Users/josearcoscampos/Sites/woocommerce/wp-content
WP_PLUGIN_DIR: /Users/josearcoscampos/Sites/woocommerce/wp-content/plugins
WP_MAX_MEMORY_LIMIT: 256M
WP_DEBUG: false
WP_DEBUG_DISPLAY: true
WP_DEBUG_LOG: false
SCRIPT_DEBUG: false
WP_CACHE: false
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_LOCAL_DEV: undefined
### wp-filesystem ###
wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable
Gracias.
