flag-count twig template calls flagcount() whithout checking if there is a flag

I have a personal flag setup for AUTHENTICATED USER. no problem for authenticated users, but I got the error below when anonymous when they go to the node page. please advise. ( I noticed the problem is only happened when I set the link type to "Count link", if I change to ajax link then the problem gone )

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TypeError: Argument 1 passed to Drupal\flag\TwigExtension\FlagCount::count() must implement interface Drupal\flag\FlagInterface, null given, called in /home/xx/public_html/web/sites/default/files/php/twig/62c74d7e62e5c_flag-count.html.twig_o3BzpAD5mRLvllwl8oGhKAnyG/A5Gd-5PDinRR3LxnxaP8i2DBUcSxPpAS6ewEtqQRXHs.php on line 67 in Drupal\flag\TwigExtension\FlagCount->count() (line 64 of modules/flag/src/TwigExtension/FlagCount.php).

Drupal\flag\TwigExtension\FlagCount->count(NULL, NULL) (Line: 67)
__TwigTemplate_9154b0721101147f4324558e3fceea7b24e25cd62199bb2f377a344aefa8b0d9->doDisplay(Array, Array) (Line: 405)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 378)
Twig\Template->display(Array) (Line: 390)
Twig\Template->render(Array) (Line: 55)
twig_render_template('modules/flag/modules/flag_count/templates/flag-count.html.twig', Array) (Line: 384)
Drupal\Core\Theme\ThemeManager->render('flag_count', Array) (Line: 422)
Drupal\Core\Render\Renderer->doRender(Array, 1) (Line: 201)
Drupal\Core\Render\Renderer->render(Array, 1) (Line: 157)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 564)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 158)
Drupal\Core\Render\Renderer->renderPlain(Array) (Line: 172)
Drupal\Core\Render\Renderer->renderPlaceholder('', Array) (Line: 649)
Drupal\Core\Render\Renderer->replacePlaceholders(Array) (Line: 534)
Drupal\Core\Render\Renderer->doRender(Array, 1) (Line: 201)
Drupal\Core\Render\Renderer->render(Array, 1) (Line: 145)
Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 564)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 146)
Drupal\Core\Render\Renderer->renderRoot(Array) (Line: 279)
Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderPlaceholders(Object) (Line: 71)
Drupal\big_pipe\Render\BigPipeResponseAttachmentsProcessor->processAttachments(Object) (Line: 45)
Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond(Object, 'kernel.response', Object)
call_user_func(Array, Object, 'kernel.response', Object) (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.response') (Line: 191)
Symfony\Component\HttpKernel\HttpKernel->filterResponse(Object, Object, 1) (Line: 179)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 80)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 709)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
nt.php).