Running Laravel 5.1 Task Scheduler in Plesk

I have uploaded my laravel 5.1 project on Plesk server. I wanted to run task scheduler in Plesk , i have seen many answers on internet to do so but nothing seems to be working for me.

My Plesk Task Scheduling Interface

I am running schedule:run command like this

 php  /var/www/vhosts/websitename.com/httpdocs/artisan schedule:run 1

and in cron style i am adding this

 * * * * *

so that my cron runs every minute

When I click on run now button I get error

 $kernel = $app->make(Illuminate\Contracts\Console\Kernel::class);

I search on internet and i found many solutions saying that it's PHP version issue , it will through error if PHP version is less or equal to PHP v5.4, but my current php version is 5.6.30

I am unable to figure it out what's the exact problem . Help is appreciated

Note: I haven't added any code yet in Kernel.php file

Instead of 'php' try to use command '/opt/plesk/php/5.6/bin/php'