Wordpress core behaving weired

Question

I have recently migrated my wordpress from digital ocean to aws and facing a weired isuue in wp-inclues files. randomly getting fatal error in wp-includes/function.php file that function not defined. when I am saving this file again issue got resolved for sometime

question from:https://stackoverflow.com/questions/65859699/wordpress-core-behaving-weired

Answer 1

Waitting for answers