{% paginate %} Tag issue, no prevUrl / nextUrl Data
You need to set a limit on your element query, so Craft knows how many entries you want per page:

{% paginate craft.entries.section('newsBlog').limit(1) as pageInfo, pageEntries %}


If you don't set a limit, {% paginate %} will return a single page with all entries, because the default value for limit in Craft 3 is null (in Craft 2, the default was 100).