Ruby on rails 使用quickbooks api进行身份验证时，oauth令牌被拒绝

我按照上的说明进行操作，并在使用quickbooks进行身份验证后收到“token_rejected”：

OAuth::Problem in VendorsController#oauth_callback

token_rejected

Request

Parameters:

{"oauth_token"=>"blah",
 "oauth_verifier"=>"blah",
 "realmId"=>"blah",
 "dataSource"=>"QBO"}

------------------------------------------------------------------------------

#vendors_controller.rb:
... 
def oauth_callback
  at = session[:qb_request_token].get_access_token(:oauth_verifier => params[:oauth_verifier])
  token = at.token
  secret = at.secret
  realm_id = params['realmId']
  redirect_to 'vendors/index', notice: "Your QuickBooks account has been successfully linked."
end
...

跟踪路由定义at=session[：qb_请求_令牌]。。。。作为抛出错误的行。有什么想法吗？

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Rails 3.1.3-ruby 1.9.3p194 2012-04-20修订版35410[x86_64-linux]

此错误表示找不到访问令牌、访问令牌已过期或访问令牌无效。我会尝试刷新访问令牌