Opening the browser from Julia ... works ... but error

Hi all,
i was trying to open the browser to a page i have previously created by Julia with this code:

    @show menu_file
    mycommand = `explorer results\\$menu_file`

I obtain this error … also if the browser open correctly and visualize my page:

menu_file = "4iKDW6V8Kw06_result_menu.html"
ERROR: LoadError: failed process: Process(`explorer 'results\4iKDW6V8Kw06_result_menu.html'`, ProcessExited(1)) [1]

It works, but i get this error in the command line (i am on windows 10) … do you know why?
Thanks for reply.

I have a package for opening files using the default OS executables: