PHP Core Warning – yii\base\ErrorException

$_SERVER = [
    'USER' => 'protech',
    'HOME' => '/home/protech',
    'FCGI_ROLE' => 'RESPONDER',
    'REDIRECT_UNIQUE_ID' => 'XizA7osaWNkzNXEge7@THQAAAAg',
    'REDIRECT_SCRIPT_URL' => '/',
    'REDIRECT_SCRIPT_URI' => 'http://protech.gen.tr/',
    'REDIRECT_STATUS' => '200',
    'UNIQUE_ID' => 'XizA7osaWNkzNXEge7@THQAAAAg',
    'SCRIPT_URL' => '/',
    'SCRIPT_URI' => 'http://protech.gen.tr/',
    'proxy-nokeepalive' => '1',
    'HTTP_USER_AGENT' => 'CCBot/2.0 (https://commoncrawl.org/faq/)',
    'HTTP_ACCEPT' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'HTTP_ACCEPT_LANGUAGE' => 'en-US,en;q=0.5',
    'HTTP_IF_MODIFIED_SINCE' => 'Sun, 15 Dec 2019 01:08:59 CST',
    'HTTP_ACCEPT_ENCODING' => 'br,gzip',
    'HTTP_HOST' => 'protech.gen.tr',
    'HTTP_CONNECTION' => 'Keep-Alive',
    'PATH' => '/usr/local/jdk/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/usr/X11R6/bin:/root/bin:/opt/bin',
    'SERVER_SIGNATURE' => '',
    'SERVER_SOFTWARE' => 'Apache',
    'SERVER_NAME' => 'protech.gen.tr',
    'SERVER_ADDR' => '95.173.162.131',
    'SERVER_PORT' => '80',
    'REMOTE_ADDR' => '35.172.195.82',
    'DOCUMENT_ROOT' => '/home/protech/public_html',
    'REQUEST_SCHEME' => 'http',
    'CONTEXT_PREFIX' => '',
    'CONTEXT_DOCUMENT_ROOT' => '/home/protech/public_html',
    'SERVER_ADMIN' => 'webmaster@protech.gen.tr',
    'SCRIPT_FILENAME' => '/home/protech/public_html/web/index.php',
    'REMOTE_PORT' => '49960',
    'REDIRECT_URL' => '/',
    'GATEWAY_INTERFACE' => 'CGI/1.1',
    'SERVER_PROTOCOL' => 'HTTP/1.1',
    'REQUEST_METHOD' => 'GET',
    'QUERY_STRING' => '',
    'REQUEST_URI' => '/',
    'SCRIPT_NAME' => '/web/index.php',
    'PHP_SELF' => '/web/index.php',
    'REQUEST_TIME_FLOAT' => 1579991278.9995529651641845703125,
    'REQUEST_TIME' => 1579991278,
    'argv' => [],
    'argc' => 0,
];