PLZ Help me

Hello everyone, I have just such a mistake http://prntscr.com/5lv5ao somebody can help?)

[KoBa4]

First ERROR
config/app.php:

'core' => [
        'url' => 'Site URL',
        'static' => 'Site URL/static',
        /*
        'session' => '/home/staging/tmp'
        */
    ]

Second ERROR
In the root site, create a folder "log". Inside, create a file "error.log"