at MongoDB.Bson.Serialization.Serializers.SerializerBase`1.MongoDB.Bson.Serialization.IBsonSerializer.Serialize(BsonSerializationContext context, BsonSerializationArgs args, Object value) in SerializerBase.cs: line 124
   at MongoDB.Bson.Serialization.IBsonSerializerExtensions.Serialize(IBsonSerializer serializer, BsonSerializationContext context, Object value) in IBsonSerializerExtensions.cs: line 60
   at MongoDB.Bson.Serialization.BsonSerializationInfo.SerializeValue(Object value) in BsonSerializationInfo.cs: line 130
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildComparisonQuery(Expression variableExpression, ExpressionType operatorType, ConstantExpression constantExpression) in PredicateTranslator.cs: line 448
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildComparisonQuery(BinaryExpression binaryExpression) in PredicateTranslator.cs: line 392
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildFilter(Expression expression) in PredicateTranslator.cs: line 91
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildOrElseQuery(BinaryExpression binaryExpression) in PredicateTranslator.cs: line 817
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildFilter(Expression expression) in PredicateTranslator.cs: line 103
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildAndAlsoQuery(BinaryExpression binaryExpression) in PredicateTranslator.cs: line 137
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.BuildFilter(Expression expression) in PredicateTranslator.cs: line 74
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.Translate(Expression node, IBsonSerializerRegistry serializerRegistry) in PredicateTranslator.cs: line 56
   at MongoDB.Driver.Linq.Translators.PredicateTranslator.Translate(Expression`1 predicate, IBsonSerializer`1 parameterSerializer, IBsonSerializerRegistry serializerRegistry) in PredicateTranslator.cs: line 50
   at MongoDB.Driver.ExpressionFilterDefinition`1.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry) in FilterDefinition.cs: line 211
   at MongoDB.Driver.MongoCollectionImpl`1.FindAsync(FilterDefinition`1 filter, FindOptions`2 options, CancellationToken cancellationToken) in MongoCollectionImpl.cs: line 217
   at MongoDB.Driver.FindFluent`2.ToCursorAsync(CancellationToken cancellationToken) in FindFluent.cs: line 111
   at MongoDB.Driver.IFindFluentExtensions.FirstOrDefaultAsync(IFindFluent`2 find, CancellationToken cancellationToken) in IFindFluentExtensions.cs: line 170