Fatal error: Uncaught Error: Call to undefined function is_page() in /home/salemart/public_html/wp-content/themes/salem-art-theme/base-theme/php/templates/main.php:2 Stack trace: #0 /home/salemart/public_html/wp-content/themes/salem-art-theme/base-theme/php/index.php(1): require() #1 /home/salemart/public_html/wp-content/themes/salem-art-theme/index.php(2): require('/home/salemart/...') #2 {main} thrown in /home/salemart/public_html/wp-content/themes/salem-art-theme/base-theme/php/templates/main.php on line 2