Could not find router reducer in state tree, it must be mounted under "router"

The solution for this is noted below

Could not find router reducer in state tree, it must be mounted under “router”

Solution

If it's history v5.0.0, i decrease verion 4.10.1, it's work ok
npm install history@4.10.1

Try other methods by searching on the site. That is if this doesn’t work