- Error: Could not find template "isis".: Argument 8 passed to PlgCsviextCustomfieldsforall:

error after update to 7.19.1 on product variant import (virtuemart)
Custom Fields For All Version 4.1.1
Stockable Custom Fields Version 1.5.1
Joomla! 3.9.23
PHP-Version 7.4.10
VirtueMart 3.8.6 10373
Attachments: template-copy, product_variant_import-file