Gravity form After Submission Not Working

I have been trying to perform some actions after gravity form submission. I have tried the gform_after_submission hook. But this hook is not working properly for me. I have just added two logs and trying to see if it prints after form submission but In the logs I saw that the after submission hook got triggered but the logs are not getting print. Can someone please Help me out here:

Funtion written in functions.php

This is the  log file

Pardon me if the pictures are blur. But please help me out from here.

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