调试程序时遇到的问题:Server Error in '/InfiTecs_Expense' Application.

Server Error in '/InfiTecs_Expense' Application.

Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.

Source Error:

Line 26:
Line 27:
Line 28:
Line 29:
Line 30:

Source File: D:\InfiTecs_Expense\portal\web.config Line: 28

看一下web.config Line: 28是什么内容,在做相应的处理