FIx route [filament.xxx.index] not defined

[liyuze]

FIx route [filament.xxx.index] not defined at /livewire/update request

public static function form(Form $form): Form
    {
        return $form
            ->schema([
                 Forms\Components\FileUpload::make('img');
            ]);
    }

When the FileUpload component is present, the system automatically sends a /livewire/update request (calls: [{path: "", method: "getFormUploadedFiles", params: ["data.img"]}]). The response body of this request triggers an exception: route [filament.xxx.index] not defined.

//file:Guava\FilamentNestedResources\Pages\CreateRelatedRecord

    public function mount(int | string $record): void
    {
        $this->ownerRecord = $this->resolveRecord($record);
        $this->record = null;

        $this->authorizeAccess();

        $this->fillForm();

        $this->previousUrl = url()->previous();
    }

    protected function getCancelFormAction(): Action
    {
        return Action::make('cancel')
            ->label(__('filament-panels::resources/pages/create-record.form.actions.cancel.label'))
            ->url($this->previousUrl ?? static::getResource()::getUrl())
            ->color('gray')
        ;
    }

The error occurs in the getCancelFormAction() method. In subsequent component calls, the mount() method is not executed, causing the previousUrl value to be null. To resolve this, previousUrl should be set as a public property so that its value can be passed between requests.