Module doesn't work for SimpleSAMLphp >= 1.19.1

[malavolti]

Hi!

I've tried to install the module on a SimpleSAMLphp 1.19.1 (Debian 10) and... it doesn't work. :(

I've also tried to apply this patch: kukkjanos@e790e36

But I got the error:
Argument 1 passed to SAML2\Message::setIssuer() must be an instance of SAML2\XML\saml\Issuer or null, string given, called in /usr/local/src/simplesamlphp-1.19.1/modules/attributeaggregator/www/attributequery.php on line 149

Can you help us?

Thank you so much!
Marco