Error: E: failed to mount / system (Invalid argument)

[dariotico11]

Hello
I have a mini s4 gt-I9192 with error: E: failed to mount / system (Invalid argument)
is there a way to restore but can not access the custom recovery mode after having successfully rooted and installed the custom recovery
Only starts in donwloading mode or logo.
I need to know if anyone has had this error and if no way to fix it or enter custom recovery

Thanks