Widget does not record the user's rate

I have installed the module because it seems so interesting.

I enabled the thumbs up/down as widget to the article content type in the Rate settings.

Now when I try to rate the content, it is not updating the %, rather I got this in the log message.

Warning: Division by zero in template_preprocess_rate_template_thumbs_up_down() (line 271 of /Applications/MAMP/htdocs/drupal-8.2.7/modules/rate/rate.module) #0 /Applications/MAMP/htdocs/drupal-8.2.7/core/includes/bootstrap.inc(548): _drupal_error_handler_real(2, 'Division by zer...', '/Applications/M...', 271, Array) #1 /Applications/MAMP/htdocs/drupal-8.2.7/modules/rate/rate.module(271): _drupal_error_handler(2, 'Division by zer...', '/Applications/M...', 271, Array) #2 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/Theme/ThemeManager.php(287): template_preprocess_rate_template_thumbs_up_down(Array, 'rate_template_t...', Array) #3 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/Render/Renderer.php(435): Drupal\Core\Theme\ThemeManager->render('rate_template_t...', Array) #4 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/Render/Renderer.php(448): Drupal\Core\Render\Renderer->doRender(Array) #5 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array, false) #6 /Applications/MAMP/htdocs/drupal-8.2.7/modules/rate/src/Controller/VoteController.php(150): Drupal\Core\Render\Renderer->render(Array) #7 /Applications/MAMP/htdocs/drupal-8.2.7/modules/rate/src/Controller/VoteController.php(180): Drupal\rate\Controller\VoteController->prepareResponse('node', '6', 'test', Object(Symfony\Component\HttpFoundation\Request)) #8 [internal function]: Drupal\rate\Controller\VoteController->vote('node', 'up', '6', Object(Symfony\Component\HttpFoundation\Request)) #9 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array) #10 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/Render/Renderer.php(574): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() #11 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure)) #12 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) #13 [internal function]: Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() #14 /Applications/MAMP/htdocs/drupal-8.2.7/vendor/symfony/http-kernel/HttpKernel.php(144): call_user_func_array(Object(Closure), Array) #15 /Applications/MAMP/htdocs/drupal-8.2.7/vendor/symfony/http-kernel/HttpKernel.php(64): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #16 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #17 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #18 /Applications/MAMP/htdocs/drupal-8.2.7/core/modules/page_cache/src/StackMiddleware/PageCache.php(99): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #19 /Applications/MAMP/htdocs/drupal-8.2.7/core/modules/page_cache/src/StackMiddleware/PageCache.php(78): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true) #20 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #21 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(50): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #22 /Applications/MAMP/htdocs/drupal-8.2.7/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #23 /Applications/MAMP/htdocs/drupal-8.2.7/core/lib/Drupal/Core/DrupalKernel.php(652): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #24 /Applications/MAMP/htdocs/drupal-8.2.7/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #25 {main}.