There has been a critical error on your website. Please check your site admin email inbox for instructions.
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Last night, I was updating Wordpress to v5.5, but then my laptop got shutdown itself to update the Windows. Now, when I visited my website, all I see is critical error.
Manually. First I did it via Wordpress Updates on wp-admin, then that “There has been critical error on your website” shows up. I thought it was in maintenance. But this morning, my website still the same. So I update it again manually via FTP Client
Ok, Well it is impossible to do an update through the wordpress dashboard, as the update files are above the 10mb max, So this comes down to the fact that you have probably replaced a file you shouldn’t have, or not replaced a file you should have when you did the FTP update
Ok, I can safely assume that it is probably [either] a misplaced file or a deleted file. In that case, The only thing i can think of is to re-install, however I checked and posts are stored in the wp_posts section, so go into PHPMyAdmin, copy all the data from wp_posts and re-install.