Uncommented the config

php-http/httplug-bundle/1.5/etc/packages/httplug.yaml

@@ -1,20 +0,0 @@
-#httplug:
-#    plugins:
-#        logger:
-#            enabled: true
-#        redirect:
-#            preserve_header: true
-#
-#    discovery:
-#        client: 'auto'
-#        async_client: false
-#
-#    clients:
-#        default:
-#            factory: 'httplug.factory.curl'
-#        acme:
-#            factory: 'httplug.factory.curl'
-#            http_methods_client: true
-#            plugins:
-#                - 'httplug.plugin.logger'
-#                - 'httplug.plugin.redirect'

php-http/httplug-bundle/1.6/etc/packages/httplug.yaml

@@ -0,0 +1,16 @@
+httplug:
+    plugins:
+        logger:
+            enabled: true
+        redirect:
+            preserve_header: true
+
+    discovery:
+        client: 'auto'
+
+    clients:
+        acme:
+            http_methods_client: true
+            plugins:
+                - 'httplug.plugin.logger'
+                - 'httplug.plugin.redirect'

php-http/httplug-bundle/1.6/manifest.json

@@ -4,8 +4,5 @@
     },
     "copy-from-recipe": {
         "etc/": "%ETC_DIR%/"
-    },
-    "composer-scripts": {
-        "assets:install --symlink --relative %WEB_DIR%": "symfony-cmd"
     }
 }