Empty Signature not Processed Correctly in PHP 8.1

I cannot reproduce this on PHP 8.1.26, but I think this might happen if the default value is applied. So i'm wondering:

• Is the element actually rendered?
• Is it fixed if you change the #default_value in \Drupal\signaturefield\Element\Signature::getInfo() to an empty string?

I did a small change, can you check if the latest dev version fixes your issue?

I will test tomorrow. But might be simpler to just use:

    if (!$element['#value']) {

I prefer not to do that because in that case a value of "000000" will be considered empty as well.

Your patch works.

Thank you.

Great!

Automatically closed - issue fixed for 2 weeks with no activity.