Redirects in multisite and 404

May be some body could help.

I use a wp multisite with this redirects:
https://www.example.com=>example.com=>example.com/es/

1) When some body ask for a non existing address of example.com/es/
it reaches the 404 for this site.

2) When some body ask for a non existing address of example.com/
it reaches the 404 for this site.

The problem is that example.com/ is an empty site, a wish to direct the traffic that demands non existing urls to 404 file of example.com/es/.

Thanks in advance