502: Bad Gateway error

Hi guys,

having these errors when trying to bulk export / view invoices:

[22-Nov-2020 19:57:17 UTC] PHP Warning: include_once(/var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro//bulk_actions/RNBulkActionManager.php): failed to open stream: No such file or directory in /var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro/woocommerce-pdf-invoice.php on line 584
[22-Nov-2020 19:57:17 UTC] PHP Warning: include_once(): Failed opening ‘/var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro//bulk_actions/RNBulkActionManager.php’ for inclusion (include_path=’.:/opt/plesk/php/7.4/share/pear’) in /var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro/woocommerce-pdf-invoice.php on line 584
[22-Nov-2020 19:57:17 UTC] PHP Fatal error: Uncaught Error: Class ‘rnwcinv\bulk_actions\RNBulkActionManager’ not found in /var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro/woocommerce-pdf-invoice.php:95
Stack trace:
#0 /var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro/woocommerce-pdf-invoice.php(66): RednaoWooCommercePDFInvoice->DefineHooks()
#1 /var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro/woocommerce-pdf-invoice.php(589): RednaoWooCommercePDFInvoice->__construct()
#2 /var/www/vhosts/metawork.studio/df.metawork.studio/wp-settings.php(377): include_once(‘/var/www/vhosts…’)
#3 /var/www/vhosts/metawork.studio/df.metawork.studio/wp-config.php(80): require_once(‘/var/www/vhosts…’)
#4 /var/www/vhosts/metawork.studio/df.metawork.studio/wp-load.php(37): require_once(‘/var/www/vhosts…’)
#5 /var/www/vhosts/metawork.studio/df.metawork.studio/wp-blog-header.php(13): require_once(‘/var/www/vhosts…’)
#6 /var/www in /var/www/vhosts/metawork.studio/df.metawork.studio/wp-content/plugins/woo-pdf-invoice-builder-pro/woocommerce-pdf-invoice.php on line 95

any idea on what might be causing this? the path looks a bit weird in the first error with a double slash

tried reuploading Pro Version again, nothing changed