MissingMethodException when serializing to Json

[drepamig]

First off, thanks for the great project. It's made things much easier for me!

Describe the bug
After upgrading to UnitsNet version 5.5.0, upon serialization, I get the following error. Version 5.4.0 works fine.

Error: System.MissingMethodException: Method not found: 'System.Decimal UnitsNet.IDecimalQuantity.get_Value()'.
   at UnitsNet.Serialization.JsonNet.UnitsNetBaseJsonConverter`1.ConvertIQuantity(IQuantity quantity)
   at UnitsNet.Serialization.JsonNet.UnitsNetIQuantityJsonConverter.WriteJson(JsonWriter writer, IQuantity value, JsonSerializer serializer)
   at Newtonsoft.Json.JsonConverter`1.WriteJson(JsonWriter writer, Object value, JsonSerializer serializer)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeConvertable(JsonWriter writer, JsonConverter converter, Object value, JsonContract contract, JsonContainerContract collectionContract, JsonProperty containerProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
   at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)
   at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
   at Newtonsoft.Json.JsonConvert.SerializeObjectInternal(Object value, Type type, JsonSerializer jsonSerializer)
   at Newtonsoft.Json.JsonConvert.SerializeObject(Object value, Type type, JsonSerializerSettings settings)
   at Newtonsoft.Json.JsonConvert.SerializeObject(Object value, JsonSerializerSettings settings)
   at Submission#3.<<Initialize>>d__0.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.CodeAnalysis.Scripting.ScriptExecutionState.RunSubmissionsAsync[TResult](ImmutableArray`1 precedingExecutors, Func`2 currentExecutor, StrongBox`1 exceptionHolderOpt, Func`2 catchExceptionOpt, CancellationToken cancellationToken)

To Reproduce
Steps to reproduce the behavior (just an example):

1. Add nugets UnitsNet, 5.5.0, UnitsNet.Serialization.JsonNet, 5.0.0 and Newtonsoft.Json, 13.0.2 to a .NET 6.0 project
2. Add code to run the example found here: UnitsNet.Serialization.JsonNet with Json.NET (Newtonsoft)
3. Build using Visual Studio 2022 v17.5.1
4. See error above.

Expected behavior
I expect it to serialize output as shown in the example in the docs:

{
  "Name": "Raiden",
  "Weight": {
    "Unit": "MassUnit.Kilogram",
    "Value": 90.0
  }
}

Additional context
I created a VS Code Polyglot Notebook that will reproduce this error as well.
JsonMissingMethodException.zip

[tmilnthorp]

@angularsen looks like we need a new version of UnitsNet.Serialization.JsonNet published. I forgot we distribute independently, and #1207 broke this.

[angularsen]

Ah yes, easy to forget. I bumped the JSON to match the current UnitsNet version, to trigger a new build and release.

@drepamig Could you take it for a spin and report back if it helps? Should be out shortly.

Release JsonNet/5.5.0 · angularsen/UnitsNet

[drepamig]

I just updated both UnitsNet and UnitsNet.Serialization.JsonNet to 5.5.0 and everything is working again. Thanks for such a fast turn around!

[angularsen]

Glad to hear it!