Hi Gourav,
I have followed the instructions in the doc you referenced above to create a zerif-lite child theme. When I try to preview or load the theme, I get the following error message in my browser :
Parse error: syntax error, unexpected T_FUNCTION in /home/content/s/e/a/seanelwood/html/wp/wp-content/themes/zerif-lite-child/functions.php on line 9