[bug] Call to a member function validateAndSecure() on false

[diderich]

🐞 bug report

⁉️ Describe the bug

When running the mail scanner (interactively or via cron) and there is an issue with the attachments, the function validateAndSecure() may be called when the object does not exist, i.e. when the creating function in app/Fields/File.php static::loadFromFileor static::loadFromUrl returns false or null.

To correct this, ensure that validateAndSecure() is only called on a proper object, for example by replacing

if($fileInstance->validateAndSecure()) {

with

if($fileInstance !== false && $fileInstance !== null && $fileInstance->validateAndSecure())

🌍 Your Environment

Environment	Version / Name
YetiForce	7.0.1
PHP	8.3.7