Lightbulb [Q] Help to solve the problem__E:Can't mount /cache/recovery/command?

hey guys
I came across this problem
When I wanted to use the cwm
stock cwm good works but when I flash custom kernel not working for me

I'm trying to install custom rom.

These errors will:

E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open/cache/recovery/log
E:Can't mount /cache/recovery/last_log
E:Can't open/cache/recovery/last_log

my phone is unlock boot loader and have stock rom.
I've done it several times but this is not true.Who can get help?