PHP Warning – yii\base\ErrorException

$_GET = [
    'id' => '15',
];

$_SERVER = [
    'PATH' => '/usr/local/bin:/usr/bin:/bin',
    'TEMP' => '/tmp',
    'TMP' => '/tmp',
    'TMPDIR' => '/tmp',
    'PWD' => '/',
    'HTTP_ACCEPT' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'HTTP_ACCEPT_ENCODING' => 'gzip',
    'HTTP_ACCEPT_LANGUAGE' => 'en-US,en;q=0.5',
    'HTTP_CONNECTION' => 'Keep-Alive',
    'CONTENT_LENGTH' => '0',
    'HTTP_HOST' => 'informatics.nure.ua',
    'HTTP_USER_AGENT' => 'CCBot/2.0 (https://commoncrawl.org/faq/)',
    'HTTP_IF_MODIFIED_SINCE' => 'Mon, 14 Oct 2019 21:52:48 JST',
    'REDIRECT_REDIRECT_UNIQUE_ID' => 'XfGF6xw@cywGnUqxSSDt-QAAAEw',
    'REDIRECT_REDIRECT_SCRIPT_URL' => '/courses/view/15',
    'REDIRECT_REDIRECT_SCRIPT_URI' => 'http://informatics.nure.ua/courses/view/15',
    'REDIRECT_REDIRECT_STATUS' => '200',
    'REDIRECT_UNIQUE_ID' => 'XfGF6xw@cywGnUqxSSDt-QAAAEw',
    'REDIRECT_SCRIPT_URL' => '/courses/view/15',
    'REDIRECT_SCRIPT_URI' => 'http://informatics.nure.ua/courses/view/15',
    'REDIRECT_STATUS' => '200',
    'UNIQUE_ID' => 'XfGF6xw@cywGnUqxSSDt-QAAAEw',
    'SCRIPT_URL' => '/courses/view/15',
    'SCRIPT_URI' => 'http://informatics.nure.ua/courses/view/15',
    'SERVER_SIGNATURE' => '',
    'SERVER_SOFTWARE' => 'Apache',
    'SERVER_NAME' => 'informatics.nure.ua',
    'SERVER_ADDR' => '94.23.148.121',
    'SERVER_PORT' => '80',
    'REMOTE_ADDR' => '3.233.224.8',
    'DOCUMENT_ROOT' => '/home/informaticsnure/public_html',
    'REQUEST_SCHEME' => 'http',
    'CONTEXT_PREFIX' => '',
    'CONTEXT_DOCUMENT_ROOT' => '/home/informaticsnure/public_html',
    'SERVER_ADMIN' => 'webmaster@informatics.nure.ua',
    'SCRIPT_FILENAME' => '/home/informaticsnure/public_html/web/index.php',
    'REMOTE_PORT' => '49216',
    'REDIRECT_URL' => '/web/courses/view/15',
    'SERVER_PROTOCOL' => 'HTTP/1.1',
    'REQUEST_METHOD' => 'GET',
    'QUERY_STRING' => '',
    'REQUEST_URI' => '/courses/view/15',
    'SCRIPT_NAME' => '/web/index.php',
    'PHP_SELF' => '/web/index.php',
    'REQUEST_TIME_FLOAT' => 1576109547.067327976226806640625,
    'REQUEST_TIME' => 1576109547,
];

$_SESSION = [
    '__flash' => [],
];