Template public:ah_discord_index is unknown

Stack trace
#0 [internal function]: XF\Template\Templater->handleTemplateError(512, 'Template public...', 's...', 584, Array)
#1 src/XF/Template/Templater.php(584): trigger_error('Template public...', 512)
#2 src/XF/Template/Templater.php(539): XF\Template\Templater->getTemplateData('public', 'ah_discord_inde...')
#3 src/XF/Template/Templater.php(1249): XF\Template\Templater->getTemplateCode('public', 'ah_discord_inde...')
#4 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('ah_discord_inde...', Array)
#5 src/XF/Mvc/Renderer/Html.php(48): XF\Template\Template->render()
#6 src/XF/Mvc/Dispatcher.php(332): XF\Mvc\Renderer\Html->renderView('ahDiscordWidget...', 'public:ah_disco...', Array)
#7 src/XF/Mvc/Dispatcher.php(303): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#8 src/XF/Mvc/Dispatcher.php(44): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#9 src/XF/App.php(1931): XF\Mvc\Dispatcher->run()
#10 src/XF.php(329): XF\App->run()
#11 index.php(13): XF::runApp('XF\\Pub\\App')
#12 {main}

Request state
array(4) {
  ["url"] => string(12) "/ah-discord/"
  ["referrer"] => string(29) "https://www.angels-reach.com/"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}