WordPress Error log redirect into specific file

add this code in the wp-config.php file

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_DISPLAY', false );
define( 'WP_DEBUG_LOG', true );

And add this line of code into the functions.php in theme.

NOTE:

for child theme

 get_stylesheet_directory() 

if the theme is a child theme than use this for path to the debug.log file.

for parent theme
use this
get_template_directory()
function alert_meErros(){
  ini_set( 'error_log', get_template_directory(). '/debug.log' );
}
add_action( 'init', 'alert_meErros', 10 );

and create a file as this example ( debug.log ) inside your theme of somewhere else in the WordPress.
This is an example of catched error details.
[08-Aug-2022 15:29:17 UTC] PHP Fatal error: Uncaught Error: Call to undefined function hello() in C:\xampp\htdocs\wp\wp-content\themes\zazaki\index.php:6

Stack trace:

#0 C:\xampp\htdocs\wp\wp-includes\template-loader.php(106): include()

#1 C:\xampp\htdocs\wp\wp-blog-header.php(19): require_once('C:\\xampp\\htdocs...')

#2 C:\xampp\htdocs\wp\index.php(17): require('C:\\xampp\\htdocs...')

#3 {main}

thrown in C:\xampp\htdocs\wp\wp-content\themes\zazaki\index.php on line 6
 
 
  










 



 
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