Fatal error: Call to undefined function wp_create_nonce()

This was most likely caused by cache folder permissions, we have moved logs/cache to another path (inside wp-content) to avoid this type of issues.

We updated the plugin

The problem still happen:

[03-Dec-2018 13:10:20 UTC] PHP Fatal error: Uncaught Error: Call to undefined function wp_create_nonce() in /home/svcentre/www/wp-includes/functions.php:1470
Stack trace:
#0 /home/svcentre/www/wp-admin/includes/file.php(1765): wp_nonce_field(‘filesystem-cred…’, ‘_fs_nonce’, false, true)
#1 /home/svcentre/www/wp-content/plugins/simple-post-gallery/vendor/10quality/wp-file/src/File.php(67): request_filesystem_credentials(‘https://www.sv-c…’, ‘ftpext’, false, false, Array)
#2 /home/svcentre/www/wp-content/plugins/simple-post-gallery/vendor/10quality/wp-file/src/File.php(45): TenQuality\WP\File->authenticate(‘https://www.sv-c…’)
#3 /home/svcentre/www/wp-content/plugins/simple-post-gallery/vendor/10quality/wpmvc-phpfastcache/src/psr4/phpFastCache.php(218): TenQuality\WP\File::auth()
#4 /home/svcentre/www/wp-content/plugins/simple-post-gallery/vendor/10quality/wpmvc-phpfastcache/src/psr4/phpFastCache.php(167): WPMVC\PHPFastCache\phpFastCache::htaccessGen(‘/home/svcentre/…’, true)

Errors:

[04-Dec-2018 06:26:33 UTC] DataBase WordPress error Table ‘svcentre.wp_woocommerce_termmeta’ doesn’t exist в ответ на запрос select * from wp_woocommerce_termmeta where meta_key = ‘product_cat’ and meta_value like ‘%571%’, выполненный require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), include(‘/themes/vega-child/woocommerce/single-product.php’), wc_get_template_part, load_template, require(‘/themes/vega-child/woocommerce/content-single-product.php’), tokokoo_display_related_product, woocommerce_related_products, wc_get_template, include(‘/themes/vega-child/woocommerce/single-product/related.php’), wc_get_template_part, load_template, require(‘/themes/vega-child/woocommerce/content-product.php’), do_action(‘woocommerce_before_shop_loop_item’), WP_Hook->do_action, WP_Hook->apply_filters, Magenest_Productlabel_Category->add_div_container, Magenest_Productlabel_Frontend->getProductLabelbaseOnCat, Magenest_Productlabel_Frontend->get_label_by_cat

• This reply was modified 5 years, 12 months ago by flashday.

We were able to reproduce this in our testing environment once. I happened when WordPress failed to create the cache or log folders.

Please create them manually, this will solve the issue. You will need to create the following structure inside the wp-content folder.

wp-content/wpmvc/log
wp-content/wpmvc/cache

we added folders:
wp-content/wpmvc/log
wp-content/wpmvc/cache

The problem still happen https://prntscr.com/lvdhas :

it looks like there is a call functions that are not yet declared.

We have got such Fatal errors:

Timestamp: 1545204146 (2018-12-19 07:22:26)
Level: Fatal
Message: Uncaught Error: Call to undefined function wp_generate_password() in /home/svcentre/www/wp-admin/includes/file.php:641

Timestamp: 1545197215 (2018-12-19 05:26:55)
Level: Fatal
Message: Uncaught Error: Call to undefined function wp_create_nonce() in /home/svcentre/www/wp-includes/functions.php:1470

( if simple gallery swich on only )