.net程序调试时出现错误信息Server Error in '/' Application.

外部测试信息如下：
<br>Server Error in / Application.
<br>--------------------------------------------------------------------------------
<br>
<br>Runtime Error
<br>Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
<br>
<br>Details: To enable the details of this specific error message to be viewable on remote machines, please create a &lt;customErrors&gt; tag within a "web.config" configuration file located in the root directory of the current web application. This &lt;customErrors&gt; tag should then have its "mode" attribute set to "Off".
<br>
<br>
<br>&lt;!-- Web.Config Configuration File --&gt;
<br>
<br>&lt;configuration&gt;
<br>    &lt;system.web&gt;
<br>        &lt;customErrors mode="Off"/&gt;
<br>    &lt;/system.web&gt;
<br>&lt;/configuration&gt;
<br>
<br>
<br>Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the applications &lt;customErrors&gt; configuration tag to point to a custom error page URL.
<br>
<br>
<br>&lt;!-- Web.Config Configuration File --&gt;
<br>
<br>&lt;configuration&gt;
<br>    &lt;system.web&gt;
<br>        &lt;customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/&gt;
<br>    &lt;/system.web&gt;
<br>&lt;/configuration&gt;
<br>
<br>服务器调试信息如下：
<br>Server Error in / Application.
<br>--------------------------------------------------------------------------------
<br>
<br>Configuration Error
<br>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.
<br>
<br>arser Error Message: Error loading XML file D:jtwzweb.config Invalid XML in file D:jtwzweb.config near element &lt;system.web&gt;..
<br>
<br>Source Error:
<br>
<br>
<br>[No relevant source lines]
<br>
<br>
<br>Source File: D:jtwzweb.config    Line: 0
<br>
<br>
<br>--------------------------------------------------------------------------------
<br>Version Information: Microsoft .NET Framework Version:2.0.40607.42; ASP.NET Version:2.0.40607.42

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