Thrown with message "View [markets.index] not found."

I'm using Laravel 5.5 and I'm beginner. After I run my server - I got an error in the browser, like this

throw new InvalidArgumentException("View [$name] not found."); - View [markets.index] not found. 

What should i do? I saw different questions like this - but those answers didn't help me. Thank U!

via Chebli Mohamed