finished the upgrade to filament 4. completely revamped the frontend with codex, now it looks great!

app/Filament/Pages/InstallPluginPage.php

@@ -2,23 +2,25 @@
 
 namespace App\Filament\Pages;
 
+use BackedEnum;
 use Filament\Forms\Components\FileUpload;
 use Filament\Forms\Concerns\InteractsWithForms;
 use Filament\Forms\Contracts\HasForms;
-use Filament\Forms\Form;
 use Filament\Notifications\Notification;
 use Filament\Pages\Page;
+use Filament\Schemas\Schema;
 use Illuminate\Support\Facades\File;
+use UnitEnum;
 
 class InstallPluginPage extends Page implements HasForms
 {
     use InteractsWithForms;
 
-    protected static ?string $navigationIcon = 'heroicon-o-cloud-arrow-up';
+    protected static string|BackedEnum|null $navigationIcon = 'heroicon-o-cloud-arrow-up';
 
-    protected static string $view = 'filament.pages.install-plugin-page';
+    protected string $view = 'filament.pages.install-plugin-page';
 
-    protected static ?string $navigationGroup = 'Plugins';
+    protected static string|UnitEnum|null $navigationGroup = 'Plugins';
 
     protected static ?string $title = 'Install Plugin';
 
@@ -29,9 +31,9 @@ class InstallPluginPage extends Page implements HasForms
         $this->form->fill();
     }
 
-    public function form(Form $form): Form
+    public function form(Schema $schema): Schema
     {
-        return $form
+        return $schema
             ->schema([
                 FileUpload::make('plugin_file')
                     ->label('Plugin File (.php)')
@@ -59,10 +61,10 @@ class InstallPluginPage extends Page implements HasForms
 
         $uploadedFile = $data['plugin_file'];
         $filename = File::basename($uploadedFile);
-        $destinationPath = app_path('Api/Plugins/' . $filename);
+        $destinationPath = app_path('Api/Plugins/'.$filename);
 
         try {
-            File::move(storage_path('app/temp_plugins/' . $filename), $destinationPath);
+            File::move(storage_path('app/temp_plugins/'.$filename), $destinationPath);
 
             Notification::make()
                 ->title('Plugin installed successfully')