If the user does not exist, a bad error message comes out.

http://localhost:8085/api/rest/login.action?username=xxxx&password=xxxxxx
<errors>
<error><!-- FREEMARKER ERROR MESSAGE STARTS HERE --><script language=javascript>//"></script><script language=javascript>//'></script><script language=j
avascript>//"></script><script language=javascript>//'></script></title></xmp></script></noscript></style></object></head></pre></table></form></table></table><
/table></a></u></i></b><div align=left style='background-color:#FFFF00; color:#FF0000; display:block; border-top:double; padding:2pt; font-size:medium; font-fam
ily:Arial,sans-serif; font-style: normal; font-variant: normal; font-weight: normal; text-decoration: none; text-transform: none'><b style='font-size:medium'>Fr
eeMarker template error!</b><pre><xmp>

Expression error is undefined on line 3, column 14 in api/rest/error.ftl.
The problematic instruction:
----------
==> ${error} [on line 3, column 12 in api/rest/error.ftl]
----------

Java backtrace for programmers:
----------
freemarker.core.InvalidReferenceException: Expression error is undefined on line 3, column 14 in api/rest/error.ftl.
at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
at freemarker.core.Expression.getStringValue(Expression.java:118)
at freemarker.core.Expression.getStringValue(Expression.java:93)
at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
at freemarker.core.Environment.visit(Environment.java:196)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:196)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:160)
at freemarker.core.Environment.visit(Environment.java:351)
at freemarker.core.IteratorBlock.accept(IteratorBlock.java:95)
at freemarker.core.Environment.visit(Environment.java:196)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:196)
at freemarker.core.Environment.process(Environment.java:176)
at freemarker.template.Template.process(Template.java:232)
at com.opensymphony.webwork.views.freemarker.FreemarkerResult.doExecute(FreemarkerResult.java:130)
at com.opensymphony.webwork.dispatcher.WebWorkResultSupport.execute(WebWorkResultSupport.java:101)
at com.opensymphony.xwork.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:312)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:207)
at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:137)
at com.atlassian.bamboo.ww2.interceptors.BambooWorkflowInterceptor.doIntercept(BambooWorkflowInterceptor.java:33)
at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:81)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)
at com.opensymphony.xwork.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:115)
at com.atlassian.bamboo.ww2.interceptors.BambooValidationInterceptor.doIntercept(BambooValidationInterceptor.java:33)
at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:81)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:189)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)