reinstalled all contribs with composer

need to run :
drush ev 'drupal_flush_all_caches();'
drush cr
and restart nginx and php-fpm before loading the website

web/modules/custom/edlp_search/edlp_search.module

@@ -0,0 +1,58 @@
+<?php
+
+/**
+ * @file
+ * Contains edlp_search.module.
+ */
+
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\Url;
+
+/**
+ * Implements hook_help().
+ */
+function edlp_search_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    // Main module help for the edlp_search module.
+    case 'help.page.edlp_search':
+      $output = '';
+      $output .= '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('Edlp search module') . '</p>';
+      return $output;
+
+    default:
+  }
+}
+
+/**
+ * Implements hook_page_attachments().
+ * @param array $attachments
+ */
+function edlp_search_page_attachments(array &$attachments) {
+  $attachments['#attached']['library'][] = 'edlp_search/edlp_search-library';
+  $url = Url::fromRoute('edlp_search.edlp_search_controller_search_results_ajax');
+  $attachments['#attached']['drupalSettings']['edlp_search']['results_ajax_url'] = $url->getInternalPath();
+}
+
+
+/**
+ * Implements hook_theme().
+ */
+function edlp_search_theme($existing, $type, $theme, $path) {
+  return array(
+    'edlp_search_search_form' => array(
+      'file' => 'includes/edlp_search_search_form.inc',
+      'variables' => array(
+        'form' => null,
+      ),
+    ),
+    'edlp_search_results' => array(
+      'file' => 'includes/edlp_search_results.inc',
+      'variables' => array(
+        'items' => null,
+        'no_results_found' => '',
+        'search_help' => ''
+      ),
+    ),
+  );
+}