Relation manager, CreateAction modal: Livewire Exception

// RelationManager
public function table(Table $table): Table
  {
      return XXXTable::configure($table)
          ->headerActions([
              CreateAction::make()
          ])
          ->filters([])
          ->recordActions([])
          ->toolbarActions([]);
  }

  public function form(Schema $schema): Schema
  {
      return XXXForm::configure($schema);
  }

// Resource

public static function getPages(): array
  {
      return [
          'index' => XXXDelegations::route('/'),
      ];
  }