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I am getting the below exception since morning. This is thrown in the generic main Controller that we have written at line getPageModel(requestPath, localization); This exception occurs on all the pages. I am eliminating each include page at a time but no luck.

Caused by: java.lang.reflect.UndeclaredThrowableException: null at com.sun.proxy.$Proxy81.buildRegions(Unknown Source) ~[na:na] at com.sdl.webapp.dd4t.PageBuilder.createPage(PageBuilder.java:141) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider$1.tryFindPage(DD4TContentProvider.java:83) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider$1.tryFindPage(DD4TContentProvider.java:69) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider.findPage(DD4TContentProvider.java:135) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider.getPageModel(DD4TContentProvider.java:69) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.PageBuilder.createPage(PageBuilder.java:134) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider$1.tryFindPage(DD4TContentProvider.java:83) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider$1.tryFindPage(DD4TContentProvider.java:69) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider.findPage(DD4TContentProvider.java:135) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TContentProvider.getPageModel(DD4TContentProvider.java:69) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.addon.controller.GenericMainController.getPageModel(GenericMainController.java:161) ~[GenericMainController.class:na] ... 53 common frames omitted Caused by: java.lang.reflect.InvocationTargetException: null at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_79] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.7.0_79] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.7.0_79] at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.7.0_79] at com.sdl.webapp.common.api.DefaultImplementation.invoke(DefaultImplementation.java:36) ~[common-api-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] ... 65 common frames omitted Caused by: java.lang.IllegalStateException: Not a java.util.Collection or Array at org.springframework.core.convert.TypeDescriptor.assertCollectionOrArray(TypeDescriptor.java:597) ~[spring-core-3.2.8.RELEASE.jar:3.2.8.RELEASE] at org.springframework.core.convert.TypeDescriptor.getElementTypeDescriptor(TypeDescriptor.java:431) ~[spring-core-3.2.8.RELEASE.jar:3.2.8.RELEASE] at com.sdl.webapp.dd4t.fieldconverters.EmbeddedFieldConverter.getFieldValue(EmbeddedFieldConverter.java:41) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.DD4TSemanticFieldDataProvider.getFieldData(DD4TSemanticFieldDataProvider.java:83) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.common.impl.mapping.SemanticMapperImpl$1.doWith(SemanticMapperImpl.java:68) ~[common-impl-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:577) ~[spring-core-3.2.8.RELEASE.jar:3.2.8.RELEASE] at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:554) ~[spring-core-3.2.8.RELEASE.jar:3.2.8.RELEASE] at com.sdl.webapp.common.impl.mapping.SemanticMapperImpl.createEntity(SemanticMapperImpl.java:47) ~[common-impl-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.EntityBuilder.createEntity(EntityBuilder.java:81) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.dd4t.PageBuilder$DD4TRegionBuilderCallback.buildEntity(PageBuilder.java:84) ~[dd4t-provider-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] at com.sdl.webapp.common.impl.DefaultRegionBuilder.buildRegions(DefaultRegionBuilder.java:44) ~[common-impl-1.0-SNAPSHOT.jar:1.0-SNAPSHOT] ... 70 common frames omitted

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  • Is this the latest DXA version? DXA 1.2 with JAVA is released now. This is the first DXA release with JAVA support. You might be using an older development copy. community.sdl.com/developers/tridion_developer/m/mediagallery/…
    – Jan H
    Commented Nov 9, 2015 at 19:02
  • 1
    Indeed, the stack trace indicates that you are on a pre-release version. We don't keep track of the source code for these pre-release versions. But you will probably have the source code (which you used to compile that version). I suggest to check what is on line 41 of EmbeddedFieldConverter.java to get a better idea of how it is failing.
    – Rick Pannekoek
    Commented Nov 9, 2015 at 19:36
  • Line 41 shows final TypeDescriptor elementType = targetType.getElementTypeDescriptor();
    – Rache
    Commented Nov 10, 2015 at 5:03
  • I was able to find which model caused this issue. It was because I allowed multiple values on a link on the Schema level but didn't handle it in the model side in Java. Thanks for pointing me to the correct line.
    – Rache
    Commented Nov 10, 2015 at 6:14
  • 1
    @Rache. Great you found the problem. You can add the answer to your own question here on Tridion.Stackexchange and approve your own answer.
    – Jan H
    Commented Nov 10, 2015 at 16:15

1 Answer 1

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This issue came up because I allowed multiple values on a link field on the schema level in CMS but forgot to modify the model in Java. This caused the java.lang.IllegalStateException: Not a java.util.Collection or Array exception.

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