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/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "edlpd8theme",
+  "version": "0.0.1",
+  "description": "A theme for drupal.",
+  "main": "gulpfile.js",
+  "author": "Bachir Soussi Chiadmi",
+  "license": "GPLv3",
+  "homepage": "https://encyclopediedelaparole.org",
+  "devDependencies": {
+    "event-stream": "^3.3.4",
+    "gulp": "latest",
+    "gulp-autoprefixer": "latest",
+    "gulp-cssmin": "latest",
+    "gulp-if": "^2.0.2",
+    "gulp-jsmin": "latest",
+    "gulp-json-to-sass": "0.0.4",
+    "gulp-rename": "latest",
+    "gulp-sass": "^4.0.1",
+    "gulp-strip-debug": "^3.0.0",
+    "gulp-watch": "latest",
+    "minimist": "^1.2.0"
+  },
+  "dependencies": {}
+}