first upload all files

Modules/User/Config/assets.php

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+<?php
+
+return [
+    /*
+    |--------------------------------------------------------------------------
+    | Define which assets will be available through the asset manager
+    |--------------------------------------------------------------------------
+    | These assets are registered on the asset manager
+    */
+    'all_assets' => [
+        'admin.user.css' => ['module' => 'user:admin/css/user.css'],
+        'admin.user.js' => ['module' => 'user:admin/js/user.js'],
+        'admin.login.css' => ['module' => 'user:admin/css/login.css'],
+        'admin.login.js' => ['module' => 'user:admin/js/login.js'],
+    ],
+
+    /*
+    |--------------------------------------------------------------------------
+    | Define which default assets will always be included in your pages
+    | through the asset pipeline
+    |--------------------------------------------------------------------------
+    */
+    'required_assets' => [],
+];

Modules/User/Config/permissions.php

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+<?php
+
+return [
+    'admin.users' => [
+        'index' => 'user::permissions.users.index',
+        'create' => 'user::permissions.users.create',
+        'edit' => 'user::permissions.users.edit',
+        'destroy' => 'user::permissions.users.destroy',
+    ],
+    'admin.roles' => [
+        'index' => 'user::permissions.roles.index',
+        'create' => 'user::permissions.roles.create',
+        'edit' => 'user::permissions.roles.edit',
+        'destroy' => 'user::permissions.roles.destroy',
+    ],
+];