When editing formSelection component by selecting "Control Type" - "radiobutton" and then clicking button "Save changes", a template error is thrown if field "mandatory" is not checked. (but it works fine for option Select box or Check boxes)

_________________________

error log:

FreeMarker template error!

Error on line 36, column 17 in form/components/formSelection.ftl
requiredAttribute is undefined.
It cannot be assigned to renderedRequiredValue
The problematic instruction:
----------
==> assignment: renderedRequiredValue=requiredAttribute [on line 36, column 17 in form/components/formSelection.ftl]
----------

Java backtrace for programmers:
----------
freemarker.core.InvalidReferenceException: Error on line 36, column 17 in form/components/formSelection.ftl
requiredAttribute is undefined.
It cannot be assigned to renderedRequiredValue
at freemarker.core.Assignment.accept(Assignment.java:111)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IfBlock.accept(IfBlock.java:82)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IfBlock.accept(IfBlock.java:82)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.ComponentElement.begin(ComponentElement.java:179)
at info.magnolia.templating.freemarker.AbstractDirective.execute(AbstractDirective.java:93)
at freemarker.core.Environment.visit(Environment.java:274)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
at freemarker.core.Environment.visit(Environment.java:428)
at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.AreaElement.end(AreaElement.java:318)
at info.magnolia.templating.freemarker.AbstractDirective.execute(AbstractDirective.java:98)
at freemarker.core.Environment.visit(Environment.java:274)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.ComponentElement.begin(ComponentElement.java:179)
at info.magnolia.templating.freemarker.AbstractDirective.execute(AbstractDirective.java:93)
at freemarker.core.Environment.visit(Environment.java:274)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:179)
at freemarker.core.Environment.visit(Environment.java:428)
at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.AreaElement.end(AreaElement.java:318)
at info.magnolia.templating.freemarker.AbstractDirective.execute(AbstractDirective.java:98)
at freemarker.core.Environment.visit(Environment.java:274)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.IfBlock.accept(IfBlock.java:82)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.ComponentElement.begin(ComponentElement.java:179)
at info.magnolia.templating.renderers.NoScriptRenderer.onRender(NoScriptRenderer.java:102)
at info.magnolia.templating.renderers.NoScriptRenderer.render(NoScriptRenderer.java:80)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.AreaElement.end(AreaElement.java:318)
at info.magnolia.templating.freemarker.AbstractDirective.execute(AbstractDirective.java:98)
at freemarker.core.Environment.visit(Environment.java:274)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.module.templatingkit.renderers.STKRenderer.render(STKRenderer.java:95)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.templating.elements.AreaElement.end(AreaElement.java:318)
at info.magnolia.templating.freemarker.AbstractDirective.execute(AbstractDirective.java:98)
at freemarker.core.Environment.visit(Environment.java:274)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:126)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:221)
at freemarker.core.Environment.process(Environment.java:199)
at freemarker.template.Template.process(Template.java:237)
at info.magnolia.freemarker.FreemarkerHelper.render(FreemarkerHelper.java:156)
at info.magnolia.rendering.renderer.FreemarkerRenderer.onRender(FreemarkerRenderer.java:98)
at info.magnolia.rendering.renderer.AbstractRenderer.render(AbstractRenderer.java:153)
at info.magnolia.module.templatingkit.renderers.STKRenderer.render(STKRenderer.java:95)
at info.magnolia.rendering.engine.DefaultRenderingEngine.render(DefaultRenderingEngine.java:108)
at info.magnolia.rendering.engine.DefaultRenderingEngine$$EnhancerByCGLIB$$5cec3b6.render(<generated>)
at info.magnolia.rendering.engine.RenderingFilter.render(RenderingFilter.java:186)
at info.magnolia.rendering.engine.RenderingFilter.doFilter(RenderingFilter.java:109)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.rendering.model.ModelExecutionFilter.doFilter(ModelExecutionFilter.java:101)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.AggregatorFilter.doFilter(AggregatorFilter.java:106)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:60)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.RepositoryMappingFilter.doFilter(RepositoryMappingFilter.java:101)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:67)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:77)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:67)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:70)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58)
at info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:66)
at info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:153)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:76)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:84)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:60)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:86)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:93)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.module.templatingkit.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:106)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:82)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:85)
at info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:104)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:56)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.UnicodeNormalizationFilter.doFilter(UnicodeNormalizationFilter.java:90)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.CosMultipartRequestFilter.doFilter(CosMultipartRequestFilter.java:91)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.module.devicedetection.filter.DeviceDetectionFilter.doFilter(DeviceDetectionFilter.java:71)
at info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:61)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:102)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:131)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:83)
at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:67)
at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:91)
at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:108)
at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:67)
at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:108)
at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:94)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
at java.lang.Thread.run(Thread.java:662)