java.lang.StringIndexOutOfBoundsException: String index out of range: 0
java.lang.String.charAt(String.java:444)
jxl.write.biff.WritableSheetImpl.validateName(WritableSheetImpl.java:2391)
jxl.write.biff.WritableSheetImpl.<init>(WritableSheetImpl.java:291)
jxl.write.biff.WritableWorkbookImpl.createSheet(WritableWorkbookImpl.java:460)
jxl.write.biff.WritableWorkbookImpl.createSheet(WritableWorkbookImpl.java:512)
org.apache.jsp.marketing.event.etiquette_005fjxl_jsp._jspService(org.apache.jsp.marketing.event.etiquette_005fjxl_jsp:186)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
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