How to reuse the address "/" in Mux.jl+Interact.jl

Am using windows PC to develop my web app using Interact.jl and Mux.jl. It is to load dynamic form by clicking menu buttons in the same address “/” always (ie, to overwrite the existing page) by reusing the “/” address. But Mux.jl (using “serve” and “WebIO.webio_serve”) even with “reuseaddr=true” is not allowing the same by throwing error that the “the address is already in use”. Pls help me to reuse the address.

Would you mind providing an MWE (minimum working example) of code so we can try out the code locally and more easily figure out a solution? It can just be a very simple example.