formregistry is now member of the DataFieldType

Author: Mathieu De Keyzer

Form/DataField/DataLinkFieldType.php

@@ -202,7 +202,7 @@ public function getBlockPrefix() {
 	public function getChoiceList(FieldType $fieldType, array $choices){
 
 		/**@var ObjectPickerType $objectPickerType*/
-		$objectPickerType = $this->registry->getType(ObjectPickerType::class)->getInnerType();
+		$objectPickerType = $this->formRegistry->getType(ObjectPickerType::class)->getInnerType();
 
 
 		/**@var ObjectChoiceLoader $loader */