对不起打扰了，求教一下

我想改头像，可是每次都出现这样的提示，请问是怎么回事呀？


警告: /includes/functions_upload.php 文件第 74 行发生 move_uploaded_file(): SAFE MODE Restriction in effect. The script whose uid is 10001 is not allowed to access /tmp owned by uid 0 错误

坏了呀....