Failed to open stream: Permission denied

I got this error when I go to webpages, any ideas on how to solve this:

I have already given there chmod -R 777 ./storage and chmod -R 777 ./bootstrap/cache.

UnexpectedValueException The stream or file "/opt/lampp/htdocs/test/storage/logs/laravel.log" could not be opened in append mode: Failed to open stream: Permission denied