User does not have sufficient privileges

Question

I'm using ckeditor with file browser. In this when upload image i'm getting  "User does not have sufficient privileges" error. 

 

it is always goes to

 

else if (!MagicSession.Current.Upload)
{
response.success = false;
response.exitcode = 3;
response.msg = GetResource("Upload_Error_3", culture, "User does not have sufficient privileges.");
} 

 

Please give me any solution to fix this bag.