SEO & Social Media Tips

 Canonical tag helps you to avoid the duplicate page/ content issue. It can be addressed with adding the canonical tag to your pages. There is a strong chance that will fix your duplicate page title issue as well.

If your site publishes content that can be reached via multiple URLs, you can gain more control over how your URLs appear in search results by specifying a canonical (preferred) version of the URL. Using the parameter handling tool is one way to do this, but you can also give Google additional information by adding the rel="canonical" element to the HTML source of your preferred URL. (To use rel="canonical", you'll need to be able to edit your pages' source code.) More information about canonicalization. Use which option works best for you; it's fine to use both if you want to be very thorough.

Source: Google