WooCommerce 4.9.1 error

Same issue here. It killed my site, and I had to enter recovery mode to go back to 4.9.0

Hi there,

I understand that you experienced a REST API related error after updating your WooCommerce installation to 4.9.1.

Could you please share a screenshot of the error you saw with us so we can help further?

Additionally, could you please share your site’s system status report to help us understand your setup?

You can find it via WooCommerce > Status. Select “Get system report” and then “Copy for support”. Once you’ve done that, you can paste it here.

We await your response to better assist you!

I updated and the website displayed as a white screen. I rolled back to 4.8.0 to restore the site to working. Wondering if there’s going to be a fix soon.

Hi @sunspots, glad to hear that you were able to get your site working again.

Just to clarify, it could be that the updated version of WooCommerce conflicted with your theme or other plugins.

If the same issue recurs in future, you can do a conflict test as explained in this guide, but if you’re not able to get into WP-Admin, there are workarounds to deactivating plugins by renaming them via FTP/cPanel.

Hi,
Here is the status report. I went back to 4.9.0 to get the shop up again. / Thx

### WordPress Environment ###

WordPress address (URL): https://smartadeals.se
Site address (URL): https://smartadeals.se
WC Version: 4.9.0
REST API Version: ? 4.9.0
WC Blocks Version: ? 4.0.0
Action Scheduler Version: ? 3.1.6
WC Admin Version: ? 1.8.3
Log Directory Writable: ?
WP Version: 5.6
WP Multisite: –
WP Memory Limit: 1 GB
WP Debug Mode: –
WP Cron: ?
Language: sv_SE
External object cache: ?

### Server Environment ###

Server Info: nginx/1.18.0
PHP Version: 7.4.14
PHP Post Max Size: 1 GB
PHP Time Limit: 180
PHP Max Input Vars: 5000
cURL Version: 7.74.0
OpenSSL/1.1.1d

SUHOSIN Installed: –
MySQL Version: 5.5.5-10.3.27-MariaDB-log
Max Upload Size: 1 GB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ?
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?

### Database ###

WC Database Version: 4.9.1
WC Database Prefix: wp_
Total databasstorlek: 84.43MB
Datastorlek f?r databas: 67.35MB
Indexstorlek f?r databas: 17.08MB
wp_woocommerce_sessions: Data: 2.02MB + Index: 0.05MB + Motor InnoDB
wp_woocommerce_api_keys: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_woocommerce_attribute_taxonomies: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_woocommerce_downloadable_product_permissions: Data: 0.02MB + Index: 0.06MB + Motor InnoDB
wp_woocommerce_order_items: Data: 0.08MB + Index: 0.05MB + Motor InnoDB
wp_woocommerce_order_itemmeta: Data: 0.44MB + Index: 0.50MB + Motor InnoDB
wp_woocommerce_tax_rates: Data: 0.02MB + Index: 0.06MB + Motor InnoDB
wp_woocommerce_tax_rate_locations: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_woocommerce_shipping_zones: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_woocommerce_shipping_zone_locations: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_woocommerce_shipping_zone_methods: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_woocommerce_payment_tokens: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_woocommerce_payment_tokenmeta: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_woocommerce_log: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
ahc_browsers: Data: 0.00MB + Index: 0.00MB + Motor MyISAM
ahc_countries: Data: 0.01MB + Index: 0.00MB + Motor MyISAM
ahc_daily_visitors_stats: Data: 1.24MB + Index: 0.71MB + Motor MyISAM
ahc_hits: Data: 0.11MB + Index: 0.01MB + Motor MyISAM
ahc_keywords: Data: 0.01MB + Index: 0.00MB + Motor MyISAM
ahc_online_users: Data: 0.03MB + Index: 0.01MB + Motor MyISAM
ahc_recent_visitors: Data: 3.00MB + Index: 0.41MB + Motor MyISAM
ahc_refering_sites: Data: 0.00MB + Index: 0.00MB + Motor MyISAM
ahc_searching_visits: Data: 0.01MB + Index: 0.01MB + Motor MyISAM
ahc_search_engines: Data: 0.00MB + Index: 0.00MB + Motor MyISAM
ahc_search_engine_crawlers: Data: 0.00MB + Index: 0.00MB + Motor MyISAM
ahc_settings: Data: 0.00MB + Index: 0.00MB + Motor MyISAM
ahc_title_traffic: Data: 0.01MB + Index: 0.00MB + Motor MyISAM
ahc_visitors: Data: 1.24MB + Index: 0.71MB + Motor MyISAM
ahc_visits_time: Data: 0.00MB + Index: 0.00MB + Motor MyISAM
wp_actionscheduler_actions: Data: 2.02MB + Index: 0.78MB + Motor InnoDB
wp_actionscheduler_claims: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_actionscheduler_groups: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_actionscheduler_logs: Data: 1.50MB + Index: 0.64MB + Motor InnoDB
wp_commentmeta: Data: 0.08MB + Index: 0.09MB + Motor InnoDB
wp_comments: Data: 0.36MB + Index: 0.42MB + Motor InnoDB
wp_defender_lockout: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_defender_lockout_log: Data: 0.13MB + Index: 0.00MB + Motor InnoDB
wp_itsec_bans: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_itsec_distributed_storage: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_itsec_fingerprints: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_itsec_geolocation_cache: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_itsec_lockouts: Data: 0.05MB + Index: 0.08MB + Motor InnoDB
wp_itsec_logs: Data: 3.02MB + Index: 0.47MB + Motor InnoDB
wp_itsec_mutexes: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_itsec_opaque_tokens: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_itsec_temp: Data: 0.23MB + Index: 0.47MB + Motor InnoDB
wp_itsec_user_groups: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_links: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_custom_fields: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_dynamic_segment_filters: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_feature_flags: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_forms: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_mailpoet_log: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_mailpoet_mapping_to_external_entities: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_newsletters: Data: 1.05MB + Index: 0.03MB + Motor InnoDB
wp_mailpoet_newsletter_links: Data: 0.13MB + Index: 0.11MB + Motor InnoDB
wp_mailpoet_newsletter_option: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_newsletter_option_fields: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_newsletter_posts: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_newsletter_segment: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_newsletter_templates: Data: 2.52MB + Index: 0.00MB + Motor InnoDB
wp_mailpoet_scheduled_tasks: Data: 0.11MB + Index: 0.06MB + Motor InnoDB
wp_mailpoet_scheduled_task_subscribers: Data: 1.52MB + Index: 0.28MB + Motor InnoDB
wp_mailpoet_segments: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_sending_queues: Data: 2.52MB + Index: 0.03MB + Motor InnoDB
wp_mailpoet_settings: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_statistics_clicks: Data: 0.02MB + Index: 0.05MB + Motor InnoDB
wp_mailpoet_statistics_forms: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_statistics_newsletters: Data: 0.23MB + Index: 0.22MB + Motor InnoDB
wp_mailpoet_statistics_opens: Data: 0.06MB + Index: 0.14MB + Motor InnoDB
wp_mailpoet_statistics_unsubscribes: Data: 0.02MB + Index: 0.05MB + Motor InnoDB
wp_mailpoet_statistics_woocommerce_purchases: Data: 0.02MB + Index: 0.06MB + Motor InnoDB
wp_mailpoet_stats_notifications: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_mailpoet_subscribers: Data: 0.16MB + Index: 0.22MB + Motor InnoDB
wp_mailpoet_subscriber_custom_field: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_subscriber_ips: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_mailpoet_subscriber_segment: Data: 0.11MB + Index: 0.11MB + Motor InnoDB
wp_mailpoet_user_flags: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_options: Data: 4.08MB + Index: 0.08MB + Motor InnoDB
wp_postmeta: Data: 8.31MB + Index: 3.88MB + Motor InnoDB
wp_posts: Data: 12.03MB + Index: 0.47MB + Motor InnoDB
wp_rank_math_404_logs: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_rank_math_analytics_gsc: Data: 0.02MB + Index: 0.06MB + Motor InnoDB
wp_rank_math_analytics_objects: Data: 0.06MB + Index: 0.02MB + Motor InnoDB
wp_rank_math_internal_links: Data: 0.05MB + Index: 0.02MB + Motor InnoDB
wp_rank_math_internal_meta: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_rank_math_redirections: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_rank_math_redirections_cache: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_rank_math_sc_analytics: Data: 4.52MB + Index: 2.52MB + Motor InnoDB
wp_responsive_menu: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_sbi_instagram_feeds_posts: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_sbi_instagram_posts: Data: 0.06MB + Index: 0.00MB + Motor InnoDB
wp_smush_dir_images: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_termmeta: Data: 0.05MB + Index: 0.03MB + Motor InnoDB
wp_terms: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_term_relationships: Data: 0.09MB + Index: 0.05MB + Motor InnoDB
wp_term_taxonomy: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_usermeta: Data: 1.52MB + Index: 0.58MB + Motor InnoDB
wp_users: Data: 0.06MB + Index: 0.05MB + Motor InnoDB
wp_vtprd_purchase_log: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_vtprd_purchase_log_product: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_vtprd_purchase_log_product_rule: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_vtprd_transient_cart_data: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_wc_admin_notes: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wc_admin_note_actions: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_wc_category_lookup: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wc_customer_lookup: Data: 0.05MB + Index: 0.03MB + Motor InnoDB
wp_wc_download_log: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_wc_order_coupon_lookup: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_wc_order_product_lookup: Data: 0.06MB + Index: 0.06MB + Motor InnoDB
wp_wc_order_stats: Data: 0.08MB + Index: 0.05MB + Motor InnoDB
wp_wc_order_tax_lookup: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_wc_product_meta_lookup: Data: 0.06MB + Index: 0.09MB + Motor InnoDB
wp_wc_reserved_stock: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wc_tax_rate_classes: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_wc_webhooks: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_wdr_order_discounts: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wdr_order_item_discounts: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wdr_rules: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wfblockediplog: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wfblocks7: Data: 0.02MB + Index: 0.05MB + Motor InnoDB
wp_wfconfig: Data: 1.28MB + Index: 0.00MB + Motor InnoDB
wp_wfcrawlers: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wffilechanges: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wffilemods: Data: 4.52MB + Index: 0.00MB + Motor InnoDB
wp_wfhits: Data: 1.02MB + Index: 0.08MB + Motor InnoDB
wp_wfhoover: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_wfissues: Data: 0.02MB + Index: 0.06MB + Motor InnoDB
wp_wfknownfilelist: Data: 1.52MB + Index: 0.00MB + Motor InnoDB
wp_wflivetraffichuman: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_wflocs: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wflogins: Data: 0.39MB + Index: 0.14MB + Motor InnoDB
wp_wfls_2fa_secrets: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_wfls_settings: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wfnotifications: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wfpendingissues: Data: 0.02MB + Index: 0.06MB + Motor InnoDB
wp_wfreversecache: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wfsnipcache: Data: 0.02MB + Index: 0.05MB + Motor InnoDB
wp_wfstatus: Data: 0.13MB + Index: 0.09MB + Motor InnoDB
wp_wftrafficrates: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wpforms_tasks_meta: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wpmailsmtp_tasks_meta: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_wpmm_subscribers: Data: 0.02MB + Index: 0.00MB + Motor InnoDB
wp_yoast_indexable: Data: 1.52MB + Index: 0.38MB + Motor InnoDB
wp_yoast_indexable_hierarchy: Data: 0.02MB + Index: 0.05MB + Motor InnoDB
wp_yoast_migrations: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_yoast_primary_term: Data: 0.02MB + Index: 0.03MB + Motor InnoDB
wp_yoast_seo_links: Data: 0.02MB + Index: 0.02MB + Motor InnoDB
wp_yoast_seo_meta: Data: 0.09MB + Index: 0.00MB + Motor InnoDB

### Post Type Counts ###

attachment: 1194
custom_css: 1
customize_changeset: 14
mailpoet_page: 1
mc4wp-form: 2
nav_menu_item: 19
oembed_cache: 52
page: 13
post: 3
product: 194
product_variation: 239
revision: 412
shop_coupon: 9
shop_order: 783
sp_wps_shortcodes: 2
woo_discount: 1
woo_discount_cart: 1
wpforms: 1

### Security ###

Secure connection (HTTPS): ?
Hide errors from visitors: ?

### Active Plugins (23) ###

Antispam Bee: av pluginkollektiv – 2.9.3
iThemes Security: av iThemes – 7.9.0
Classic Editor: av WordPress Contributors – 1.6
Cookie Notice: av dFactory – 1.3.2
Enable jQuery Migrate Helper: av WordPress-teamet – 1.3.0
Health Check & Troubleshooting: av www.remarpro.com-gemenskapen – 1.4.5
PaysonCheckout for WooCommerce: av Krokedil – 3.0.1
MailPoet 3 Premium (New): av MailPoet – 3.58.0
MailPoet 3 (Ny): av MailPoet – 3.58.0
Nginx Helper: av rtCamp – 2.2.2
Poptin: av Poptin – 1.2.1
Redis Object Cache: av Till Krüss – 2.0.17
Rank Math SEO: av Rank Math – 1.0.56.1
Trustpilot-reviews: av Trustpilot – 2.5.811
WPC Fly Cart for WooCommerce (Premium): av WPClever.net – 2.4.1
Woo Product Category Discount: av WooExtend – 3.2
Print Invoice & Delivery Notes for WooCommerce: av Tyche Softwares – 4.6.2
WooCommerce: av Automattic – 4.9.0 (en uppdatering till version 4.9.1 finns tillg?nglig)
WP Mail SMTP: av WPForms – 2.5.1
WP Maintenance Mode: av Designmodo – 2.3.0
Smush Pro: av WPMU DEV – 3.8.2
WPForms Lite: av WPForms – 1.6.4.1
WPMU DEV Dashboard: av WPMU DEV – 4.10.6

### Inactive Plugins (0) ###

### Dropin Plugins (1) ###

object-cache.php: Redis Object Cache Drop-In

### Must Use Plugins (1) ###

Health Check Troubleshooting Mode: av  – 1.7.2

### Settings ###

API Enabled: –
Force SSL: –
Currency: SEK (kr)
Currency Position: left_space
Thousand Separator: .
Decimal Separator: .
Number of Decimals: 2
Taxonomies: Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)

Connected to WooCommerce.com: –

### WC Pages ###

Butikbas: #65 - /butik/
Varukorg: #66 - /varukorg/
Kassan: #67 - /kassan/
Mitt konto: #68 - /mitt-konto/
Allm?nna villkor: #75 - /kopvillkor/

### Theme ###

Name: Smarta Deals
Version: 1.0.0
Author URL: 
Child Theme: ?
Parent Theme Name: YOOtheme
Parent Theme Version: 2.3.27
Parent Theme Author URL: https://yootheme.com
WooCommerce Support: ?

### Templates ###

Overrides: –

### Action Scheduler ###

Complete: 2?992
Oldest: 2020-12-22 12:10:51 +0100
Newest: 2021-01-21 22:58:46 +0100

Pending: 6
Oldest: 2021-01-21 23:13:46 +0100
Newest: 2021-01-25 08:57:40 +0100

Hi @joeeey83,

Thanks for sharing the SSR. It was good of you to revert to the earlier version so as to get your site back up.

It’s been a while so the issue may no longer be present. However, I would suggest that you try upgrading to the most updated version of WooCommerce on the development/staging version of your site to see if anything comes up.

I will go ahead and mark the thread as resolved for the general health of the forums. However, feel free to open a new thread if you experience any challenges with your upgrade.

Thanks.