Facebook previews are not working on most – but not all – pages

  • Resolved averixus

    (@averixus)


    3 years, 5 months ago

    The facebook debugger gives these errors when testing most pages (e.g. https://developers.facebook.com/tools/debug/?q=https%3A%2F%2Fparvusplants.uk%2Farticle%2Fcare-guide-drosera-capensis):

    • Could Not Connect To Server: Check that the webserver is running, and that there are no firewalls blocking Facebook’s crawlers.
    • Curl Error: Curl error: 56 (RECV_ERROR)
    • Inferred Property: The ‘og:image’ property should be explicitly provided, even if a value can be inferred from other tags.
    • Missing Properties: The following required properties are missing: og:url, og:type, og:title, og:image, og:description, fb:app_id

    There don’t seem to be any issues with the server, and those og tags are all set in the page source. But facebook doesn’t even use a default image and title, never mind the ones set in the source.

    Other pages have working facebook previews (e.g. the homepage, https://developers.facebook.com/tools/debug/?q=https%3A%2F%2Fparvusplants.uk%2F).

    This problem seems to have developed recently (in the last few weeks?) but I’m not sure whether it’s associated with a particular update. I’ve tried disabling all plugins and it had no effect.

    Site health info:

    `
    ### wp-core ###

    version: 5.7.2
    site_language: en_GB
    user_language: en_GB
    timezone: +00:00
    permalink: /article/%postname%/
    https_status: true
    multisite: false
    user_registration: 0
    blog_public: 1
    default_comment_status: undefined
    environment_type: production
    user_count: 9
    dotorg_communication: true

    ### wp-paths-sizes ###

    wordpress_path: /home/parvuspl/public_html
    wordpress_size: loading…
    uploads_path: /home/parvuspl/public_html/wp-content/uploads
    uploads_size: loading…
    themes_path: /home/parvuspl/public_html/wp-content/themes
    themes_size: loading…
    plugins_path: /home/parvuspl/public_html/wp-content/plugins
    plugins_size: loading…
    database_size: loading…
    total_size: loading…

    ### wp-active-theme ###

    name: Storefront Child (storefront-child)
    version: 1.0
    author: Anonymous
    author_website: (undefined)
    parent_theme: Storefront (storefront)
    theme_features: core-block-patterns, 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, infinite-scroll
    theme_path: /home/parvuspl/public_html/wp-content/themes/storefront-child
    auto_update: Disabled

    ### wp-parent-theme ###

    name: Storefront (storefront)
    version: 3.7.0
    author: Automattic
    author_website: https://woocommerce.com/
    theme_path: /home/parvuspl/public_html/wp-content/themes/storefront
    auto_update: Disabled

    ### wp-plugins-active (13) ###

    Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro: version: 2.2, author: codewoogeek, Auto-updates disabled
    Content Aware Sidebars: version: 3.15.2, author: Joachim Jensen – DEV Institute, Auto-updates disabled
    Jetpack: version: 9.8.1, author: Automattic, Auto-updates disabled
    KIA Subtitle: version: 3.0.3, author: Kathy Darling, Auto-updates disabled
    KIA Subtitle + WooCommerce Bridge: version: 1.1.0, author: Kathy Darling, Auto-updates disabled
    Print Invoice & Delivery Notes for WooCommerce: version: 4.6.2, author: Tyche Softwares, Auto-updates disabled
    Storefront Blog Excerpt: version: 1.1.4, author: Wooassist, Auto-updates disabled
    SVG Support: version: 2.3.18, author: Benbodhi, Auto-updates disabled
    WooCommerce: version: 5.4.1, author: Automattic, Auto-updates disabled
    WooCommerce Extra Product Sorting Options: version: 2.9.0, author: SkyVerge, Auto-updates disabled
    WooCommerce Stripe Gateway: version: 5.2.3, author: WooCommerce, Auto-updates disabled
    Yoast Duplicate Post: version: 4.1.2, author: Enrico Battocchi & Team Yoast, Auto-updates disabled
    Yoast SEO: version: 16.4, author: Team Yoast, Auto-updates disabled

    ### wp-media ###

    image_editor: WP_Image_Editor_Imagick
    imagick_module_version: 1690
    imagemagick_version: ImageMagick 6.9.10-68 Q16 x86_64 2021-01-06 https://imagemagick.org
    file_uploads: File uploads is turned off
    post_max_size: 1024M
    upload_max_filesize: 1024M
    max_effective_size: 1 GB
    max_file_uploads: 1,000
    imagick_limits:
    imagick::RESOURCETYPE_AREA: 503 GB
    imagick::RESOURCETYPE_DISK: 9.2233720368548E+18
    imagick::RESOURCETYPE_FILE: 37500
    imagick::RESOURCETYPE_MAP: 503 GB
    imagick::RESOURCETYPE_MEMORY: 251 GB
    imagick::RESOURCETYPE_THREAD: 64
    gd_version: bundled (2.1.0 compatible)
    ghostscript_version: 9.25

    ### wp-server ###

    server_architecture: Linux 3.10.0-962.3.2.lve1.5.44.el7.x86_64 x86_64
    httpd_software: LiteSpeed
    php_version: 7.3.27 64bit
    php_sapi: litespeed
    max_input_variables: 10000
    time_limit: 1200
    memory_limit: 1024M
    max_input_time: 3600
    upload_max_filesize: 1024M
    php_post_max_size: 1024M
    curl_version: 7.74.0 OpenSSL/1.1.1j
    suhosin: false
    imagick_availability: true
    pretty_permalinks: true
    htaccess_extra_rules: true

    ### wp-database ###

    extension: mysqli
    server_version: 10.4.19-MariaDB-cll-lve
    client_version: mysqlnd 5.0.12-dev – 20150407 – $Id: 7cc7cc96e675f6d72e5cf0f267f48e167c2abb23 $

    ### wp-constants ###

    WP_HOME: undefined
    WP_SITEURL: undefined
    WP_CONTENT_DIR: /home/parvuspl/public_html/wp-content
    WP_PLUGIN_DIR: /home/parvuspl/public_html/wp-content/plugins
    WP_MEMORY_LIMIT: 40M
    WP_MAX_MEMORY_LIMIT: 1024M
    WP_DEBUG: false
    WP_DEBUG_DISPLAY: true
    WP_DEBUG_LOG: false
    SCRIPT_DEBUG: false
    WP_CACHE: true
    CONCATENATE_SCRIPTS: undefined
    COMPRESS_SCRIPTS: undefined
    COMPRESS_CSS: undefined
    WP_LOCAL_DEV: undefined
    DB_CHARSET: utf8mb4
    DB_COLLATE: undefined

    ### wp-filesystem ###

    wordpress: writable
    wp-content: writable
    uploads: writable
    plugins: writable
    themes: writable

    ### jetpack ###

    site_id: 185307094
    ssl_cert: No
    time_diff: false
    version_option: 9.8.1:1623199492
    old_version: 9.8:1622594455
    public: Public
    master_user: No master user set.
    current_user: #1 avery
    tokens_set: None
    blog_token: Not set.
    user_token: Not set.
    version: 9.8.1
    jp_plugin_dir: /home/parvuspl/public_html/wp-content/plugins/jetpack/
    plan: free
    protect_header: {“trusted_header”:”REMOTE_ADDR”,”segments”:1,”reverse”:false}
    full_sync: {“started”:”Thu, 01 Jan 1970 00:00:00 +0000″,”finished”:”Thu, 01 Jan 1970 00:00:00 +0000″,”progress”:[],”config”:[]}
    sync_size: 64
    sync_lag: 15 minutes, 27 seconds
    full_sync_size: undefined
    full_sync_lag: 0 seconds
    idc_urls: {“home”:”https:\/\/parvusplants.uk”,”siteurl”:”https:\/\/parvusplants.uk”,”WP_HOME”:””,”WP_SITEURL”:””}
    idc_error_option: false
    idc_optin: true
    cxn_tests: {“8”:{“name”:”test__connection_token_health”,”label”:false,”short_description”:”Blog token validation failed.”,”long_description”:”<p>A healthy connection ensures Jetpack essential services are provided to your WordPress site, such as Stats and Site Security.<\/p><p><span class=\”dashicons fail\”><span class=\”screen-reader-text\”>Error<\/span><\/span> Blog token validation failed.<\/p><p><strong>We recommend reconnecting Jetpack.<\/strong><\/p>”,”severity”:”critical”,”action”:”https:\/\/parvusplants.uk\/wp-admin\/admin.php?page=jetpack#\/reconnect”,”action_label”:”Reconnect Jetpack now”,”show_in_site_health”:true,”pass”:false,”group”:[“default”],”type”:”direct”}}

    `

Viewing 4 replies - 1 through 4 (of 4 total)
  • Thread Starter averixus

    (@averixus)

    My server host discovered that something was being blocked by their firewall. Resolved now ??

    electricianinbocaraton

    (@electricianinbocaraton)

    This also Happened with my Website Boca Raton Electrician.

    Hi @averixus , we seem to be having a similar issue. Any chance you could share what was being blocked by your host? I’ve contacted our hosting provider and they couldn’t see anything.

    Thread Starter averixus

    (@averixus)

    Hi @df50, I’m not sure how helpful I can be but I’ll give you all the information I have. My host said this in reply to my question:

    I believe the IP may have been blocked by our server firewall, I’ve cleared out the firewall blocks and i’m seeing a 200 OK response via the Facebook Debug tool.

    It looks like this was being classed as a bad bot / bad crawler on our server.

    We’ve adjusted your .htaccess file to state that this is a Good Bot and to allow it through, the firewall block appears to have likely been from when this was being classed as a bad bot by the system, so this should now be fine going forward.

    I looked in the .htaccess file and found these added lines. I’m not sure if they’re host-specific or not (I’m with EcoHosting) but just in case it helps:

    BrowserMatchNoCase “(?:\b)FacebookBot(?:\b)” good_bot
    BrowserMatchNoCase “(?:\b)facebookexternalhit(?:\b)” good_bot
    BrowserMatchNoCase “(?:\b)Facebot(?:\b)” good_bot

Viewing 4 replies - 1 through 4 (of 4 total)
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