issue regarding member receiving

[dabo123148]

Using version: 2.4.0
Error started occurring in the last few hours, before was running smooth

Serializer Error:
Newtonsoft.Json.JsonSerializationException: Error converting value {null} to type 'System.DateTimeOffset'. Path 'member.joined_at'. ---> System.ArgumentException: Could not cast or convert from {null} to System.DateTimeOffset.
bei Newtonsoft.Json.Utilities.ConvertUtils.EnsureTypeAssignable(Object value, Type initialType, Type targetType)
bei Newtonsoft.Json.Utilities.ConvertUtils.ConvertOrCast(Object initialValue, CultureInfo culture, Type targetType)
bei Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
--- Ende der internen Ausnahmestapelüberwachung ---
bei Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
bei Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
bei Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)

[d4n3436]

Related: discord/discord-api-docs#2911

[quinchs]

This was fixed in #1923