fix

app/Http/Controllers/SiteDatabaseController.php

@@ -25,7 +25,7 @@ class SiteDatabaseController extends Controller
         $site = auth()->user()->sites()->findOrFail($id);
 
         $database = $site->databases()->create([
-            'name' => Str::of($site->domain)->limit(8)->remove(['.', '-'])->lower()->append('_')->append($request->input('name')),
+            'name' => Str::of($site->domain)->limit(5)->remove(['.', '-'])->lower()->append('_')->append($request->input('name')),
         ]);
 
         $database->users()->create([

app/Http/Requests/SiteDatabaseRequest.php

@@ -45,8 +45,7 @@ class SiteDatabaseRequest extends FormRequest
                 new NotContains('-'),
             ],
             'user_name' => [
-                'sometimes',
-                'nullable',
+                'required',
                 'string',
                 'alpha_dash',
                 'min:2',
@@ -58,8 +57,7 @@ class SiteDatabaseRequest extends FormRequest
                 ])
             ],
             'password' => [
-                'sometimes',
-                'nullable',
+                'required',
                 'string',
             ],
         ];