Deprecated: Return type of Guzzle\Iterator\AppendIterator::append(Iterator $iterator) should either be compatible with AppendIterator::append(Iterator $iterator): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/systemdecorcom/public_html/sg/util/nfephp/vendor/guzzlehttp/guzzle/src/Guzzle/Iterator/AppendIterator.php on line 15