Hi! I am updating umbraco from 7 to 8 version. I got this piece of code in my project:

public class TypedPublishedContentQuery : IPublishedContentQuery
    {
        private static readonly Mapper __mapper = new Mapper();
    private readonly IPublishedContentQuery __typedPublishedContentQuery;
    private readonly PublishedContentTypeResolver __publishedContentTypeResolver;

    public TypedPublishedContentQuery()
        : this(new PublishedContentQuery(Current.UmbracoContext.PublishedSnapshot, Current.UmbracoContext.VariationContextAccessor))
    {

    }

    public TypedPublishedContentQuery(IPublishedContentQuery typedPublishedContentQuery)
    {
        this.__publishedContentTypeResolver = new PublishedContentTypeResolver();
        this.__typedPublishedContentQuery = typedPublishedContentQuery;
    }

    public IEnumerable<T> TypedContent<T>(IEnumerable<int> ids)
        where T : class, IPublishedContent
    {
        return this.__typedPublishedContentQuery.Content(ids)
                                                .Select(typedContent =>
                                                    this.CreateTypedPublishedContent<T>(typedContent)
                                                )
                                                .Where(typedContent =>
                                                    typedContent != null
                                                );
    }

    public IEnumerable<T> TypedContent<T>(IEnumerable<Guid> ids)
        where T : class, IPublishedContent
    {
        return this.__typedPublishedContentQuery.Content(ids)
            .Select(typedContent =>
                this.CreateTypedPublishedContent<T>(typedContent)
            )
            .Where(typedContent =>
                typedContent != null
            );
    }

    IEnumerable<IPublishedContent> IPublishedContentQuery.Content(IEnumerable<int> ids)
    {
        return this.TypedContent<IPublishedContent>(ids);
    }

    public IEnumerable<IPublishedContent> TypedContent(IEnumerable<Guid> ids)
    {
        return this.TypedContent<IPublishedContent>(ids);
    }

    public T TypedContent<T>(int id)
        where T : class, IPublishedContent
    {
        var publishedContent = this.__typedPublishedContentQuery.Content(id);
        if(publishedContent == null)
        {
            return null;
        }

        var typedContent = this.CreateTypedPublishedContent<T>(publishedContent);
        if(typedContent == null)
        {
            return null;
        }

        return typedContent;
    }

    public T TypedContent<T>(Guid id)
        where T : class, IPublishedContent
    {
        var publishedContent = this.__typedPublishedContentQuery.Content(id);
        if (publishedContent == null)
        {
            return null;
        }

        var typedContent = this.CreateTypedPublishedContent<T>(publishedContent);
        if (typedContent == null)
        {
            return null;
        }

        return typedContent;
    }

    IPublishedContent IPublishedContentQuery.Content(int id)
    {
        return this.TypedContent<IPublishedContent>(id);
    }

    public IPublishedContent TypedContent(Guid id)
    {
        return this.TypedContent<IPublishedContent>(id);
    }

    ......

}

After upgrading, When I run the project and starting page opens up for the first time, there is no issues. But if I reload the page i got "Cannot access a disposed object. Object name: 'snapshot'. " issue. Or if I try to open other pages. Can't find where is the problem and why snapshot gets disposed. Would be grateful for any help.