InvalidArgumentException when Amazon Polly installed

Hiya:

More and FYI than anything, but I was getting InvalidArgumentException when I tried to do a bulk delete, but the error was linked to Amazon Polly plugin so i had to disable that before I could bulk delete.

This is what my logs said: Validator.php:65\nStack trace:\n#0 /srv/<website>/public/htdocs/wp-content/plugins/amazon-polly/vendor/aws/Aws/Middleware.php(79): Aws\\Api\\Validator->validate(‘DeleteObject’, Object(Aws\\Api\\StructureShape), Array)\n#1 /srv/<website>/public/htdocs/wp-content/plugins/amazon-polly/vendor/aws/Aws/S3/S3Client.php(425): Aws\\Middleware::Aws\\{closure}(Object(Aws\\Command), NULL)\n#2 /srv/<website>/public/htdocs/wp-content/plugins/amazon-polly/vendor/aws/Aws/S3/S3Client.php(448): Aws\\S3\\S3Client::Aws\\S3\\{closure}(Object(Aws\\Command), NULL)\n#3 /srv/<website>/public/htdocs/wp-content/plugins/amazon-polly/vendor/aws/Aws/S3/S3Client.php(382): Aws\\S3\\S3Client::Aws\\S3\\{closure}(Object(Aws\\Command), NUL in /srv/<website>/public/htdocs/wp-content/plugins/amazon-polly/vendor/aws/Aws/Api/Validator.php on line 65, referer: https://<website>/wp-admin/admin.php?page=bulk-delete-posts

-Ben.