litespeedtest does not test more than 12 servers

[hadifarnoud]

I used it like this
./lite --config config.json --test https://gist.githubusercontent.com/*****

and out of 30 servers, it only tested 12. I have retired many times it never tests more than 12.
the url contains servers only in clash config format

{
    "group":"job",
    "speedtestMode":"all",
    "pingMethod":"googleping",
    "sortMethod":"rspeed",
    "concurrency":1,
    "testMode":2,
    "subscription":"https://gist.githubusercontent.com/****",
    "timeout":500,
    "language":"en",
    "fontSize":24,
    "theme":"rainbow",
    "generatePicMode": 1
}

[xxf098]

maybe the clash file is not parsed correctly