Fatal error: Uncaught Error: Call to undefined function Nwdthemes\Revslider\Model\Revslider\esc_attr() in /home/sentrycom/web/app/code/Nwdthemes/Revslider/Model/Revslider/RevSliderSlider.php:311 Stack trace: #0 /home/sentrycom/web/app/code/Nwdthemes/Revslider/Model/Revslider/RevSliderSlider.php(273): Nwdthemes\Revslider\Model\Revslider\RevSliderSlider->init_by_alias('hero brazil') #1 /home/sentrycom/web/app/code/Nwdthemes/Revslider/Model/Revslider/RevSliderOutput.php(606): Nwdthemes\Revslider\Model\Revslider\RevSliderSlider->init_by_mixed('hero-brazil') #2 /home/sentrycom/web/app/code/Nwdthemes/Revslider/Model/Revslider/RevSliderOutput.php(584): Nwdthemes\Revslider\Model\Revslider\RevSliderOutput->add_slider_base() #3 /home/sentrycom/web/app/code/Nwdthemes/Revslider/Block/Revslider.php(47): Nwdthemes\Revslider\Model\Revslider\RevSliderOutput->add_slider_to_stage('hero-brazil') #4 /home/sentrycom/web/app/code/Nwdthemes/Revslider/Block/Revslider.php(93): Nwdthemes\Revslider\Block\Revslider->_renderSlider() #5 [internal func in /home/sentrycom/web/app/code/Nwdthemes/Revslider/Model/Revslider/RevSliderSlider.php on line 311