Exception: Serialization of 'Closure' is not allowed in serialize() (line 14 of core/lib/Drupal/Component/Serialization/PhpSerialize.php).
Drupal\Component\Serialization\PhpSerialize::encode(Array) (Line: 111)
Drupal\Core\KeyValueStore\DatabaseStorageExpirable->doSetWithExpire('form-9qoHplkxo2WHZtoLFNAH7wXi31erpIVvxoUxR5yhiq4', Array, 21600) (Line: 127)
Drupal\Core\KeyValueStore\DatabaseStorageExpirable->setWithExpire('form-9qoHplkxo2WHZtoLFNAH7wXi31erpIVvxoUxR5yhiq4', Array, 21600) (Line: 197)
Drupal\Core\Form\FormCache->setCache('form-9qoHplkxo2WHZtoLFNAH7wXi31erpIVvxoUxR5yhiq4', Array, Object) (Line: 463)
Drupal\Core\Form\FormBuilder->setCache('form-9qoHplkxo2WHZtoLFNAH7wXi31erpIVvxoUxR5yhiq4', Array, Object) (Line: 441)
Drupal\Core\Form\FormBuilder->rebuildForm('search_api_pinecone_search', Object, Array) (Line: 633)
Drupal\Core\Form\FormBuilder->processForm('search_api_pinecone_search', Array, Object) (Line: 325)
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