syntax error, unexpected '|', expecting variable (T_VARIABLE)

#0 /nas/content/live/bpit/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/nas/content/li...')
#1 [internal function]: Composer\Autoload\ClassLoader->loadClass('Symfony\\Compone...')
#2 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/Debug/DebuggerTrait.php(66): spl_autoload_call('Symfony\\Compone...')
#3 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Util/Util/SandBox.php(38): Phug\Renderer->Phug\Renderer\Partial\Debug\{closure}()
#4 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/Debug/DebuggerTrait.php(83): Phug\Util\SandBox->__construct(Object(Closure))
#5 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/Debug/DebuggerTrait.php(142): Phug\Renderer->getErrorAsHtml(Object(ErrorException), Array, Array)
#6 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/Debug/DebuggerTrait.php(176): Phug\Renderer->getErrorMessage(Object(ErrorException), Object(Phug\Util\SourceLocation), Object(stdClass))
#7 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/Debug/DebuggerTrait.php(265): Phug\Renderer->getRendererException(Object(ErrorException), 1, 4, 5, '- var faq = pos...', '/nas/content/li...', Array, Array)
#8 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/Debug/DebuggerTrait.php(382): Phug\Renderer->getDebuggedException(Object(ErrorException), 1, '- var faq = pos...', '/nas/content/li...', Array, Array)
#9 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer/Partial/AdapterTrait.php(182): Phug\Renderer->handleError(Object(ErrorException), 1, '/nas/content/li...', 'handleHtmlEvent(Object(Phug\Renderer\Event\HtmlEvent), Array, '/nas/content/li...', Object(Closure))
#11 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Renderer/Renderer.php(252): Phug\Renderer->callAdapter('display', '/nas/content/li...', NULL, Object(Closure), Array)
#12 /nas/content/live/bpit/vendor/pug-php/pug/src/Pug/Engine/Renderer.php(181): Phug\Renderer->displayFile('/nas/content/li...', Array)
#13 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Phug/Phug/Phug.php(221): Pug\Engine\Renderer->displayFile('/nas/content/li...', Array)
#14 [internal function]: Phug\Phug::displayFile('/nas/content/li...', Array, Array)
#15 /nas/content/live/bpit/vendor/pug-php/pug/src/Pug/Facade.php(24): call_user_func_array(Array, Array)
#16 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Phug/Phug/Optimizer.php(156): Pug\Facade::__callStatic('displayFile', Array)
#17 [internal function]: Phug\Optimizer->displayFile('/nas/content/li...', Array)
#18 /nas/content/live/bpit/vendor/phug/phug/src/Phug/Phug/Phug/Optimizer.php(219): call_user_func_array(Array, Array)
#19 /nas/content/live/bpit/wp-content/themes/ballentine-partners/inc/site.php(172): Phug\Optimizer::call('displayFile', Array, Array)
#20 /nas/content/live/bpit/wp-content/themes/ballentine-partners/tpl-page-faq.php(12): Site->render('page-faq.pug', Array)
#21 /nas/content/live/bpit/wp-includes/template-loader.php(106): include('/nas/content/li...')
#22 /nas/content/live/bpit/wp-blog-header.php(19): require_once('/nas/content/li...')
#23 /nas/content/live/bpit/index.php(17): require('/nas/content/li...')
#24 {main}