Dear all, after successfully upgrade umbraco 7.2.8 to 7.6.13 if i navigate to certain item in the content tree (most of my item) i get

Failed to retrieve data for content id XXXX and in the log file

 2019-08-16 12:41:12,480 [P2460/D22/T34] ERROR Umbraco.Web.Editors.ContentController - Unhandled controller exception occurred

AutoMapper.AutoMapperMappingException:

Mapping types: Content -> String[] Umbraco.Core.Models.Content -> System.String[]

Destination path: ContentItemDisplay.Urls.Urls

Source value: Umbraco.Core.Models.Content ---> System.InvalidOperationException: The current pre-value collection is array based, use the PreValuesAsArray property instead. This usually indicates that the content cache is corrupt; the content cache has been rebuilt in an attempt to self-fix the issue. at Umbraco.Web.PublishedCache.XmlPublishedCache.XmlPublishedContent.InitializeNode(XmlNode xmlNode, Boolean legacy, Boolean isPreviewing, Int32& id, Guid& key, Int32& template, Int32& sortOrder, String& name, String& writerName, String& urlName, String& creatorName, Int32& creatorId, Int32& writerId, String& docTypeAlias, Int32& docTypeId, String& path, Guid& version, DateTime& createDate, DateTime& updateDate, Int32& level, Boolean& isDraft, PublishedContentType& contentType, Dictionary2& properties, Func3 getPublishedContentType) at Umbraco.Web.PublishedCache.XmlPublishedCache.XmlPublishedContent.InitializeNode() at Umbraco.Web.PublishedCache.XmlPublishedCache.XmlPublishedContent.getPath() at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedContentCache.AddToCacheIfDeepestRoute(UmbracoContext umbracoContext, IPublishedContent content, String route) at Umbraco.Web.PublishedCache.XmlPublishedCache.PublishedContentCache.GetByRoute(UmbracoContext umbracoContext, Boolean preview, String route, Nullable1 hideTopLevelNode) at Umbraco.Web.Routing.ContentFinderByNiceUrl.FindContent(PublishedContentRequest docreq, String route) at Umbraco.Web.Routing.ContentFinderByNiceUrl.TryFindContent(PublishedContentRequest docRequest) at System.Linq.Enumerable.Any[TSource](IEnumerable1 source, Func2 predicate) at Umbraco.Web.Routing.PublishedContentRequestEngine.FindPublishedContent() at Umbraco.Web.Routing.PublishedContentRequestEngine.TryRouteRequest() at Umbraco.Web.Routing.UrlProviderExtensions.GetContentUrls(IContent content, UmbracoContext umbracoContext) at lambda_method(Closure , IContent ) at AutoMapper.DelegateBasedResolver2.Resolve(ResolutionResult source) at AutoMapper.NullReferenceExceptionSwallowingResolver.Resolve(ResolutionResult source) at System.Linq.Enumerable.Aggregate[TSource,TAccumulate](IEnumerable1 source, TAccumulate seed, Func3 func) at AutoMapper.Mappers.TypeMapObjectMapperRegistry.PropertyMapMappingStrategy.MapPropertyValue(ResolutionContext context, IMappingEngineRunner mapper, Object mappedObject, PropertyMap propertyMap) --- End of inner exception stack trace --- at AutoMapper.Mappers.TypeMapObjectMapperRegistry.PropertyMapMappingStrategy.MapPropertyValue(ResolutionContext context, IMappingEngineRunner mapper, Object mappedObject, PropertyMap propertyMap) at AutoMapper.Mappers.TypeMapObjectMapperRegistry.PropertyMapMappingStrategy.Map(ResolutionContext context, IMappingEngineRunner mapper) at AutoMapper.Mappers.TypeMapMapper.Map(ResolutionContext context, IMappingEngineRunner mapper) at AutoMapper.MappingEngine.AutoMapper.IMappingEngineRunner.Map(ResolutionContext context) at AutoMapper.MappingEngine.Map[TSource,TDestination](TSource source) at Umbraco.Web.Editors.ContentController.GetById(Int32 id) at lambdamethod(Closure , Object , Object[] ) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>cDisplayClass10.9(Object instance, Object[] methodParameters) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ApiControllerActionInvoker.

Thanks a lot for any help.

Davide