PHP Core Warning – yii\base\ErrorException

$_GET = [
    'id' => '3575',
];

$_SERVER = [
    'USER' => 'nobody',
    'HOME' => '/',
    'FCGI_ROLE' => 'RESPONDER',
    'SCRIPT_FILENAME' => '//adisk_ssd1/www/ING-SPORTS/Runninginchina/web/Index.php',
    'QUERY_STRING' => '',
    'REQUEST_METHOD' => 'GET',
    'CONTENT_TYPE' => '',
    'CONTENT_LENGTH' => '',
    'SCRIPT_NAME' => '/Index.php',
    'REQUEST_URI' => '/enroll/index/3575.html',
    'DOCUMENT_URI' => '/Index.php',
    'DOCUMENT_ROOT' => '/adisk_ssd1/www/ING-SPORTS/Runninginchina/web',
    'SERVER_PROTOCOL' => 'HTTP/1.1',
    'GATEWAY_INTERFACE' => 'CGI/1.1',
    'SERVER_SOFTWARE' => 'nginx/1.8.1',
    'REMOTE_ADDR' => '121.40.144.102',
    'REMOTE_PORT' => '51232',
    'SERVER_ADDR' => '10.47.74.83',
    'SERVER_PORT' => '80',
    'SERVER_NAME' => '*.runninginchina.org',
    'REDIRECT_STATUS' => '200',
    'HTTP_HOST' => 'www.ing-sports.com',
    'HTTP_USER_AGENT' => 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)',
    'HTTP_ACCEPT' => '*/*',
    'HTTP_ACCEPT_ENCODING' => 'gzip, br, zstd, deflate',
    'HTTP_COOKIE' => '_csrf=b9fa98d20bad2f357048122e9f7965adce2c4473bc0c5549ef5790282689f3afa%3A2%3A%7Bi%3A0%3Bs%3A5%3A%22_csrf%22%3Bi%3A1%3Bs%3A32%3A%22vWVMXXuBdMuF0Bdhjrmik636P-d_Jv0n%22%3B%7D',
    'HTTP_VIA' => '2.0 Caddy',
    'HTTP_X_FORWARDED_FOR' => '216.73.216.127',
    'HTTP_X_FORWARDED_HOST' => 'www.ing-sports.com',
    'HTTP_X_FORWARDED_PROTO' => 'https',
    'PHP_SELF' => '/Index.php',
    'REQUEST_TIME_FLOAT' => 1754457353.9090011,
    'REQUEST_TIME' => 1754457353,
];

$_COOKIE = [
    '_csrf' => 'b9fa98d20bad2f357048122e9f7965adce2c4473bc0c5549ef5790282689f3afa:2:{i:0;s:5:"_csrf";i:1;s:32:"vWVMXXuBdMuF0Bdhjrmik636P-d_Jv0n";}',
];