Title: Critical error after wordpress update Last modified: March 24, 2021 --- # Critical error after wordpress update * Resolved [remaynosoucay](https://wordpress.org/support/users/remaynosoucay/) * (@remaynosoucay) * [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/) * Hi I didn’t update wordpress for a while and when I did it with the last version I had a critical error and I can’t access my website anymore (as administrator or visitor). The only way to access my website is by FTP. How can I do? (I am not a real webmaster…) I have all elements saved (via FTP) and a bit old backup made with backuptrust (if I can’t avoid using it it’s better because it’s not the last version) Here is the error message that appear when I go on my page: * Warning: require_once(/home/cyclofambv/www/wp-includes/cache-compat.php): failed to open stream: No such file or directory in /home/cyclofambv/www/wp-includes/ load.php on line 691 * Fatal error: require_once(): Failed opening required ‘/home/cyclofambv/www/wp- includes/cache-compat.php’ (include_path=’.:/usr/local/php7.0/lib/php’) in /home/ cyclofambv/www/wp-includes/load.php on line 691 * There has been a critical error on your website. * Thank for your help! * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcritical-error-after-wordpress-update%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 5 replies - 1 through 5 (of 5 total) * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/#post-14230914) * Critical Error: * Errors like this are logged. Check the error log on your server. If you can’t find the log, please contact your host. Meantime, enable wp_debug and wp_debug_log and after an error, look at wp-content/debug.log to see if anything gets logged there. [https://wordpress.org/support/article/debugging-in-wordpress/](https://wordpress.org/support/article/debugging-in-wordpress/) * You can also try: – [manually resetting your plugins](https://wordpress.org/support/article/faq-troubleshooting/#how-to-deactivate-all-plugins-when-not-able-to-access-the-administrative-menus)( no Dashboard access required). If that resolves the issue, reactivate each one individually until you find the cause. – If that does not resolve the issue, access your server via [SFTP or FTP](https://wordpress.org/support/article/ftp-clients/), or a file manager in your hosting account’s control panel, navigate to `/wp-content/ themes/` and rename the directory of your currently active theme. This will force the default theme to activate and hopefully rule-out a theme-specific issue ( theme functions can interfere like plugins). * Thread Starter [remaynosoucay](https://wordpress.org/support/users/remaynosoucay/) * (@remaynosoucay) * [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/#post-14231028) * Thanks t-p, I can’t log in so I tried FTP. I have removed all plugins and still had the problem. I even had some more lines describing new error so I put back this plugin (wp-super-cache) and came back to the original error message. I have removed all themes and reinstalled twenty twenty. Doesn’t solve the problem. What to try next? Is there a way to reinstal the old version of wordpress by FTP and do you think it could solve my problem? * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/#post-14231235) * First, try re-updating WP MANUALLY. * Download a fresh copy of the latest.zip file for this release (top right on this page) to your computer, and use that to copy up. You may need to delete the wp- admin and wp-includes folders on your server (NOTE: do not delete the wp-content directory or your wp-config.php file) Read the [Manual Update directions first](https://wordpress.org/support/article/updating-wordpress/). * Thread Starter [remaynosoucay](https://wordpress.org/support/users/remaynosoucay/) * (@remaynosoucay) * [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/#post-14236324) * THANK YOU!!! IT WORKS NOW!!! Thanks so much. You are a king. * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/#post-14236420) * You are welcome 🙂 Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘Critical error after wordpress update’ is closed to new replies. ## Tags * [lost website](https://wordpress.org/support/topic-tag/lost-website/) * [update wordpress](https://wordpress.org/support/topic-tag/update-wordpress/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 5 replies * 3 participants * Last reply from: [t-p](https://wordpress.org/support/users/t-p/) * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/critical-error-after-wordpress-update/#post-14236420) * Status: resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics