Incorrect license will cause LSWS unstable

The LiteSpeed service on my WHM stops every day at a certain time and you may need to restart LSWS to bring it back, but it happens again at the following day. wswarch.sh is running well. What could be the reason?

Beyond technical reason, incorrect license type will also cause unstable LSWS service. For example, you may see something similar when you check your license:

/usr/local/lsws/bin/lshttpd -V

2018-09-21 10:35:40.633173[NOTICE] Memory size is: 16265880KB.
[ERROR] Ultra VPS license can not be used on VPS with more than 8GB memory.
Please upgrade your license to 1-CPU license!

Don't ignore such license error when you see them. Upgrading license may fix the LSWS unstable issue.