Zend certified PHP/Magento developer

After Upgrading to Magento2.4.4-pt1 on Reindexing I am getting error Illegal offset type on reindexing catalog_product_attribute

Upgraded to Magento2.4.4-pt1. Now reindexing from SSH I am getting error with reindexing catalog_product_attribute.

php -d memory_limit=2G bin/magento indexer:reindex catalog_product_attribute
Product EAV index process error during indexation process:
Warning: Illegal offset type in /var/www/vhosts/upperlimitsinc.com/httpdocs/vendor/magento/module-catalog/Model/ResourceModel/Product/Indexer/Eav/Source.php on line 392.

I am not sure why I am getting this error or how to fix. Any help would be greatly appreciated. Thank you!