<>apache tomcat/7.0.62 - error report

http status 500 - string index out of range: -10

type exception report

message string index out of range: -10

description the server encountered an internal error that prevented it from fulfilling this request.

exception java.lang.stringindexoutofboundsexception: string index out of range: -10 java.lang.string.substring com.lib.decryptutil.filedecrypt com.encrypt.action.execute sun.reflect.generatedmethodaccessor38.invoke sun.reflect.delegatingmethodaccessorimpl.invoke java.lang.reflect.method.invoke com.opensymphony.xwork2.defaultactioninvocation.invokeaction com.opensymphony.xwork2.defaultactioninvocation.invokeactiononly com.opensymphony.xwork2.defaultactioninvocation.invoke com.opensymphony.xwork2.interceptor.defaultworkflowinterceptor.dointercept com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept com.opensymphony.xwork2.defaultactioninvocation.invoke com.opensymphony.xwork2.validator.validationinterceptor.dointercept org.apache.struts2.interceptor.validation.annotationvalidationinterceptor.dointercept com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept com.opensymphony.xwork2.defaultactioninvocation.invoke com.opensymphony.xwork2.interceptor.conversionerrorinterceptor.intercept com.opensymphony.xwork2.defaultactioninvocation.invoke com.opensymphony.xwork2.interceptor.parametersinterceptor.dointercept com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept com.opensymphony.xwork2.defaultactioninvocation.invoke com.opensymphony.xwork2.interceptor.parametersinterceptor.dointercept com.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept com.opensymphony.xwork2.defaultactioninvocation.invoke com.opensymphony.xwork2.interceptor.staticparametersinterceptor.intercept com.opensymphony.xwork2.defaultactioninvocation.invoke org.apache.struts2.interceptor.multis