我已经尝试过数天才能访问我的局域网中的Kaldin（一种在线检查软件），但是它一直显示错误消息，要求提供补丁来实现此目的。是否有任何人提供该补丁程序的链接，或者可以将其发送给我至pascali4christ@gmail.com
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
java.lang.String.substring(Unknown Source)
com.kaldin.company.filter.CompanyFilter.doFilter(CompanyFilter.java:43)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
Apache Tomcat/6.0.18