<p>&lt;html&gt;&lt;head&gt;&lt;title&gt;apachetomcat/7.0.62-errorreport&lt;/title&gt;&lt;style&gt;&lt;!--h1{font-family:tahoma,arial,sans-serif;color:white;background-color:#525d76;font-size:22px;}h2{font-family:tahoma,arial,sans-serif;color:white;background-color:#525d76;font-size:16px;}h3{font-family:tahoma,arial,sans-serif;color:white;background-color:#525d76;font-size:14px;}body{font-family:tahoma,arial,sans-serif;color:black;background-color:white;}b{font-family:tahoma,arial,sans-serif;color:white;background-color:#525d76;}p{font-family:tahoma,arial,sans-serif;background:white;color:black;font-size:12px;}a{color:black;}a.name{color:black;}hr{color:#525d76;}--&gt;&lt;/style&gt;&lt;/head&gt;&lt;body&gt;&lt;h1&gt;httpstatus500-nullinputbuffer&lt;/h1&gt;&lt;hrsize=&quot;1&quot;noshade=&quot;noshade&quot;&gt;\r

&lt;b&gt;type&lt;/b&gt;exceptionreport

\r

&lt;b&gt;message&lt;/b&gt;&lt;u&gt;nullinputbuffer&lt;/u&gt;

\r

&lt;b&gt;description&lt;/b&gt;&lt;u&gt;theserverencounteredaninternalerrorthatpreventeditfromfulfillingthisrequest.&lt;/u&gt;

\r

&lt;b&gt;exception&lt;/b&gt;

java.lang.illegalargumentexception:nullinputbuffer

javax.crypto.cipher.dofinal(cipher.java:2127)

&amp;nbsp.lib.encrypt.decrypt(encrypt.java:29)

&amp;nbsp.lib.decryptutil.filedecrypt(decryptutil.java:36)

&amp;nbsp.encrypt.action.execute(action.java:59)

sun.reflect.generatedmethodaccessor38.invoke(unknownsource)

sun.reflect.delegatingmethodaccessorimpl.invoke(unknownsource)

java.lang.reflect.method.invoke(unknownsource)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invokeaction(defaultactioninvocation.java:452)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invokeactiononly(defaultactioninvocation.java:291)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:254)

&amp;nbsp.opensymphony.xwork2.interceptor.defaultworkflowinterceptor.dointercept(defaultworkflowinterceptor.java:176)

&amp;nbsp.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)

&amp;nbsp.opensymphony.xwork2.validator.validationinterceptor.dointercept(validationinterceptor.java:263)

org.apache.struts2.interceptor.validation.annotationvalidationinterceptor.dointercept(annotationvalidationinterceptor.java:68)

&amp;nbsp.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)

&amp;nbsp.opensymphony.xwork2.interceptor.conversionerrorinterceptor.intercept(conversionerrorinterceptor.java:133)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)

&amp;nbsp.opensymphony.xwork2.interceptor.parametersinterceptor.dointercept(parametersinterceptor.java:207)

&amp;nbsp.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)

&amp;nbsp.opensymphony.xwork2.interceptor.parametersinterceptor.dointercept(parametersinterceptor.java:207)

&amp;nbsp.opensymphony.xwork2.interceptor.methodfilterinterceptor.intercept(methodfilterinterceptor.java:98)

&amp;nbsp.opensymphony.xwork2.defaultactioninvocation.invoke(defaultactioninvocation.java:248)

&amp;nbsp.opensymphony.xwork2.interceptor.staticparametersinterceptor.intercept(staticparametersinterceptor.java:190)