Overwrite Hidden file in cpanel

When I get the problem to access the hidden file in cpanel then i Solve this problem by Overwriting the hidden file. In my work there is the hidden .env file , Which is laravel project database and app configuration are make in that file. So the access of this file was necessary to get the content updated . But I did not get the solution . so I think Final solution of this problem is that by overwriting that hidden file and make that correct configuration.

But this is not a good idea . Because I reset the content of the public_html and make changes on hidden file. First Error need to be solved .