why HashScan not work?

HashScan not work . SetScan,SortedSetScan,not work too.

What libraries does hashscan depend on? Maybe i didn't import

all lib ,i imported. version ,from nuget

.net50\StackExchange.Redis=2.2.50.36290
.net50\Pipelines.Sockets.Unofficial.dll=2.2.0.45337
.net50\System.IO.Pipelines.dll=5.0.20.51904

powershell source

$hash = [StackExchange.Redis.RedisKey]"hash2"
$patt = [StackExchange.Redis.RedisValue]"a*"
$page = [int]50
$flag = [StackExchange.Redis.CommandFlags]::None
$Global:db1.HashScan($hash,$patt,$page,$flag)
MethodException: Cannot find an overload for "HashScan" and the argument count: "4".

$Global:db1.HashScan

OverloadDefinitions
-------------------
System.Collections.Generic.IEnumerable[StackExchange.Redis.HashEntry] IDatabase.HashScan(StackExchange.Redis.RedisKey key, StackExchange.R
edis.RedisValue pattern, int pageSize, StackExchange.Redis.CommandFlags flags)
System.Collections.Generic.IEnumerable[StackExchange.Redis.HashEntry] IDatabase.HashScan(StackExchange.Redis.RedisKey key, StackExchange.R
edis.RedisValue pattern, int pageSize, long cursor, int pageOffset, StackExchange.Redis.CommandFlags flags)

[string]$Global:db1.HashGetall($hash)
aaa_1_2: b c_2_9: aaaa

Start by reproducing the PowerShell calls to IDatabase.HashScan, SetScan, and SortedSetScan using the versions listed in the issue, then compare the invocation with the shown overload definitions. Done would require a confirmed explanation of the overload failure or a clearly scoped client defect, but the issue does not state an expected change or name a test or source file.