Fix entity reference field key and add null safety for taxonomy term loading

[Copilot]

field_service_alert_dash_cat is an entity reference field, but its referenced entity ID was being read via ['value'] instead of ['target_id'], causing load() to receive bad input and return NULL — followed by a fatal on $taxonomy->get(...).

Changes

• Wrong array key: getValue()[0]['value'] → getValue()[0]['target_id'] to correctly retrieve the referenced term ID
• Null safety: Wrap taxonomy field access in if ($taxonomy !== NULL) guard after load()
• Empty field guard: Check !empty($tax_image_values) before accessing [0]['target_id'] on field_twitter_image

// Before
$set_dashboard = $data['node']->get('field_service_alert_dash_cat')->getValue()[0]['value'];
$taxonomy = \Drupal::entityTypeManager()->getStorage('taxonomy_term')->load($set_dashboard);
$tax_image = $taxonomy->get('field_twitter_image'); // fatal if load() returns NULL

// After
$set_dashboard = $data['node']->get('field_service_alert_dash_cat')->getValue()[0]['target_id'];
$taxonomy = \Drupal::entityTypeManager()->getStorage('taxonomy_term')->load($set_dashboard);
$image_id = NULL;
if ($taxonomy !== NULL) {
  $tax_image_values = $taxonomy->get('field_twitter_image')->getValue();
  $image_id = !empty($tax_image_values) ? ($tax_image_values[0]['target_id'] ?? NULL) : NULL;
}

---

📍 Connect Copilot coding agent with Jira, Azure Boards or Linear to delegate work to Copilot in one click without leaving your project management tool.