PHP Core Warning – yii\base\ErrorException

$_GET = [
    'month' => '5',
    'page' => '1',
    'province' => '215',
];

$_SERVER = [
    'USER' => 'nobody',
    'HOME' => '/',
    'FCGI_ROLE' => 'RESPONDER',
    'SCRIPT_FILENAME' => '//adisk_ssd1/www/ING-SPORTS/Runninginchina/web/Index.php',
    'QUERY_STRING' => 'month=5&page=1&province=215',
    'REQUEST_METHOD' => 'GET',
    'CONTENT_TYPE' => '',
    'CONTENT_LENGTH' => '',
    'SCRIPT_NAME' => '/Index.php',
    'REQUEST_URI' => '/event/index.html?month=5&page=1&province=215',
    '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' => '50662',
    'SERVER_ADDR' => '10.47.74.83',
    'SERVER_PORT' => '80',
    'SERVER_NAME' => '*.runninginchina.org',
    'REDIRECT_STATUS' => '200',
    'HTTP_HOST' => 'www.runninginchina.org',
    '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_VIA' => '2.0 Caddy',
    'HTTP_X_FORWARDED_FOR' => '216.73.216.166',
    'HTTP_X_FORWARDED_HOST' => 'www.runninginchina.org',
    'HTTP_X_FORWARDED_PROTO' => 'https',
    'PHP_SELF' => '/Index.php',
    'REQUEST_TIME_FLOAT' => 1754172655.880198,
    'REQUEST_TIME' => 1754172655,
];