Thanks for answer!

My algorithms.txt is like this:
{
    "Difficulty":  null,
    "EnabledAlgorithms":  null,
    "DisabledAlgorithms":  null
}

Is ok to manually modify like this:

{
    "Difficulty":  null,
    "EnabledAlgorithms":  null,
    "DisabledAlgorithms":  [ "Blake2s", "X17" ]
}

Seems to work... Thanks!