Uncaught Error: Call to undefined function blocksy_get_variables_from_file()

I suddenly get an error on Blocksy Companion saying:

An error of type E_ERROR was caused in line 369 of the file /rootFolder/wp-content/plugins/blocksy-companion/framework/features/blocks/query/block.php

Here is the full error:

An error of type E_ERROR was caused in line 369 of the file rootFolder/wp-content/plugins/blocksy-companion/framework/features/blocks/query/block.php. Error message: Uncaught Error: Call to undefined function Blocksy\Editor\Blocks\blocksy_get_variables_from_file() in rootFolder/wp-content/plugins/blocksy-companion/framework/features/blocks/query/block.php:369 Stack trace: #0 rootFolder/wp-includes/class-wp-hook.php(324): Blocksy\Editor\Blocks\Query->Blocksy\Editor\Blocks\{closure}() #1 rootFolder/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #2 /rootFolder/wp-includes/plugin.php(517): WP_Hook->do_action() #3 rootFolder/wp-settings.php(700): do_action() #4 rootFolder/wp-config.php(111): require_once('/home/u64960578...') #5 /rootFolder/wp-load.php(50): require_once('/home/u64960578...') #6 /rootFolder/wp-blog-header.php(13): require_once('/home/u64960578...') #7 rootFolder/public_html/index.php(17): require('/home/u64960578...') #8 {main} thrown