A little issue with my web script, need Mysql & PHP Developer

A little issue with my web script, need Mysql & PHP Developer

FTP:185.202.238.158
username:admin_test_admin
password:admin12345

Here is an issue with tasks.
you could check on Tasks.php file in the controllers
Here on manage, I want to fetch only the submissions for the owner of that tasks.
Not all submissions of others.
So I need the correct SQL to fetch only those submissions on tasks submissions.
Contact me asap if you understand what I said.

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Requirements

Just need to fix the correct sql to fetch the data.

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Skills Required

php mysql