Fatal error: Call to undefined function Think\C() in /data/nginx/neigou_clubs/ThinkPHP/Library/Think/Think.class.php on line 301

Call Stack:
    0.0003     657184   1. {main}() /data/nginx/neigou_clubs/yuangong.php:0
    0.0005     739968   2. require('/data/nginx/neigou_clubs/ThinkPHP/ThinkPHP.php') /data/nginx/neigou_clubs/yuangong.php:32
    0.0060    1773088   3. Think\Think::start() /data/nginx/neigou_clubs/ThinkPHP/ThinkPHP.php:104
    0.0066    1830464   4. Think\Think::fatalError() /data/nginx/neigou_clubs/ThinkPHP/Library/Think/Think.class.php:0
    0.0069    1867256   5. Think\Think::halt() /data/nginx/neigou_clubs/ThinkPHP/Library/Think/Think.class.php:270