jaimeph

Very interesting.

I’ve just completed an upgrade and got this error on the Stackable plugin instead.

I also upgraded TablePress to 2.2.2 in the same batch after updating Stackable.

This makes me wonder if this is not specific to a plugin but has something to do with WordPress and/or WPEngine (we are also with WPEngine).

Uncaught Error: Call to undefined function fs_get_optional_constant() in /nas/content/live/site/wp-content/plugins/stackable-ultimate-gutenberg-blocks/freemius/includes/class-freemius.php:1361

Stack trace:
#0 /nas/content/live/site/wp-includes/class-wp-hook.php(310): Freemius->_run_garbage_collector('')

#1 /nas/content/live/site/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters(NULL, Array)

#2 /nas/content/live/site/wp-includes/plugin.php(517): WP_Hook->do_action(Array)

#3 /nas/content/live/site/wp-settings.php(495): do_action('plugins_loaded')

#4 /nas/content/live/site/wp-config.php(120): require_once('/nas/content/li...')

#5 /nas/content/live/site/wp-load.php(50): require_once('/nas/content/li...')

#6 /nas/content/live/site/wp-admin/admin-ajax.php(22): require_once('/nas/content/li...')

#7 {main}
  thrown