Secondly, I switch 4.0.2 to 4.0.1 in hoping to fix that error.
Switched to 4.0.1.
But still got that error and plus I cannot switch back to 4.0.2 again.
I even cannot switch LSWS to Apache in order to reinstall this LSWS to 4.0.2.
In this stucked 4.0.1, LSWS cannot use to access https and cannot read files with 400 chmoded.