Fatal error: Uncaught Error: Call to undefined function wp_convert_hr_to_bytes() in /home/saleh/domains/saleh.ir/public_html/festival/wp-includes/default-constants.php:38 Stack trace: #0 /home/saleh/domains/saleh.ir/public_html/festival/wp-settings.php(61): wp_initial_constants() #1 /home/saleh/domains/saleh.ir/public_html/festival/wp-config.php(77): require_once('/home/saleh/dom...') #2 /home/saleh/domains/saleh.ir/public_html/festival/wp-load.php(37): require_once('/home/saleh/dom...') #3 /home/saleh/domains/saleh.ir/public_html/festival/wp-blog-header.php(13): require_once('/home/saleh/dom...') #4 /home/saleh/domains/saleh.ir/public_html/festival/index.php(17): require('/home/saleh/dom...') #5 {main} thrown in /home/saleh/domains/saleh.ir/public_html/festival/wp-includes/default-constants.php on line 38