Notice: Undefined offset: 0 in EntityReferenceVERCF->getArgument()

Problem/Motivation

When the name of the field is wrong write in the views vercf configuration field.

Notice: Undefined offset: 0 in Drupal\vercf\Plugin\views\argument_default\EntityReferenceVERCF->getArgument() (line 119 of modules/contrib/vercf/src/Plugin/views/argument_default/EntityReferenceVERCF.php).

Drupal\vercf\Plugin\views\argument_default\EntityReferenceVERCF->getArgument() (Line: 802)
Drupal\views\Plugin\views\argument\ArgumentPluginBase->getDefaultArgument() (Line: 1090)
Drupal\views\ViewExecutable->_buildArguments() (Line: 1267)
Drupal\views\ViewExecutable->build(NULL) (Line: 1391)
Drupal\views\ViewExecutable->execute(NULL) (Line: 1454)
Drupal\views\ViewExecutable->render() (Line: 131)
Drupal\views\Plugin\views\display\Block->execute() (Line: 1630)
Drupal\views\ViewExecutable->executeDisplay('block_1', Array) (Line: 81)
Drupal\views\Element\View::preRenderViewElement(Array) (Line: 59)
Drupal\views\Plugin\Block\ViewsBlock->build() (Line: 133)
Drupal\twig_tweak\View\BlockViewBuilder->build('views_block:lab_equipment_equipment_list-block_1', Array, 1) (Line: 145)
Drupal\twig_tweak\TwigTweakExtension::drupalBlock('views_block:lab_equipment_equipment_list-block_1', Array) (Line: 49)
__TwigTemplate_f93f88f19ca3e3f413be9461fbc659833298b79e2effdd3879ad6cefa34d4754->doDisplay(Array, Array) (Line: 405)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 378)
Twig\Template->display(Array) (Line: 390)
Twig\Template->render(Array) (Line: 65)
twig_render_template('themes/custom/cedex/templates/lab-equipment/node--lab-equipment--full.html.twig', Array) (Line: 384)