Terraria error

[Server API] Error Startup aborted due to an exception in the Server API initial
ization:
System.InvalidOperationException: Failed to load assembly "MultiServerChat.dll".
 ---> System.InvalidOperationException: Could not create an instance of plugin c
lass "MultiServerChat.MultiServerChat". ---> System.Reflection.TargetInvocationE
xception: Exception has been thrown by the target of an invocation. ---> Newtons
oft.Json.JsonSerializationException: Error converting value "http://0.0.0.0:4567
/msc" to type 'System.Collections.Generic.List`1[System.String]'. ---> System.Ex
ception: Could not cast or convert from System.String to System.Collections.Gene
ric.List`1[System.String].
   at Newtonsoft.Json.Utilities.ConvertUtils.EnsureTypeAssignable(Object value,
Type initialType, Type targetType)
   at Newtonsoft.Json.Utilities.ConvertUtils.ConvertOrCast(Object initialValue,
CultureInfo culture, Type targetType)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(Obje
ct value, CultureInfo culture, Type targetType)
   --- End of inner exception stack trace ---
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(Obje
ct value, CultureInfo culture, Type targetType)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInte
rnal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty mem
ber, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueProp
erty(JsonReader reader, JsonProperty property, Object target, Boolean gottenCurr
entValue, Object currentValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValu
e(JsonProperty property, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(
Object newObject, JsonReader reader, JsonObjectContract contract, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateAndPopula
teObject(JsonReader reader, JsonObjectContract contract, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(Js
onReader reader, Type objectType, JsonContract contract, JsonProperty member, Ob
ject existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInte
rnal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty mem
ber, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueNonP
roperty(JsonReader reader, Type objectType, JsonContract contract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(Jso
nReader reader, Type objectType)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type
 objectType)
   at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, Jso
nSerializerSettings settings)
   at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSeriali
zerSettings settings)
   at MultiServerChat.ConfigFile.Read(Stream stream)
   at MultiServerChat.ConfigFile.Read(String path)
   at MultiServerChat.MultiServerChat..ctor(Main game)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments,
 Signature sig, Boolean constructor)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, B
inder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder bin
der, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCra
wlMark& stackMark)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binde
r binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, Object[] args)
   at TerrariaApi.Server.ServerApi.LoadPlugins()
   --- End of inner exception stack trace ---
   at TerrariaApi.Server.ServerApi.LoadPlugins()
   --- End of inner exception stack trace ---
   at TerrariaApi.Server.ServerApi.LoadPlugins()
   at TerrariaApi.Server.ServerApi.Initialize(String[] commandLineArgs, Main gam
e)
   at Terraria.ProgramServer.Main(String[] args)