This error is thrown occasionaly when the converter runs into an Exception.
The original code catches the generic \Exception but the message generated there expects a description property that is only present in the ConversionFailedException.
[2023-09-26 report.CRITICAL: Exception: Warning: Undefined property: Exception::$description in ../vendor/yireo/magento2-webp2/Convertor/ConvertWrapper.php on line 55 in ..//vendor/magento/framework/App/ErrorHandler.php:62
Stack trace:
This error is thrown occasionaly when the converter runs into an Exception. The original code catches the generic \Exception but the message generated there expects a description property that is only present in the ConversionFailedException.