How can I resolve hreflang conflicts for international selling?

[William_smith27]

Good Morning.  

Since adding different countries and getting more domains for Shopify Markets for international selling I'm not getting 27 498 errors on Semrush for hreflang Conflicts...

It says: 

To avoid any conflicts, we recommend that you review your hreflang attributes within your page's source code and fix any of the following issues:
- Conflicting hreflang and rel=canonical URLs
- Conflicting hreflang URLs
- No self-referencing hreflang URLs

I have NO IDEA how to fix this 

Can someone help and give me guidance in "simple speak" on how to do so?