{"record":{"id":"c26d3eea332e77b4","repo":"stride3d/stride","slug":"can-t-find-serializer-for-type-0","errorCode":null,"errorMessage":"Can't find serializer for type {0}","messagePattern":"Can't find serializer for type (.+?)","errorType":"exception","errorClass":"InvalidOperationException","httpStatus":null,"severity":"error","filePath":"sources/core/Stride.Core.AssemblyProcessor/Serializers/ReferencedAssemblySerializerProcessor.cs","lineNumber":86,"sourceCode":"            {\n                if (mode == DataSerializerGenericMode.None)\n                    dataType = FindSerializerDataType(dataSerializerType);\n                else\n                    throw new InvalidOperationException(\"Can't deduce data serializer type for generic types.\");\n            }\n\n            // Reading from custom arguments doesn't have its ValueType properly set\n            dataType = dataType.FixupValueType();\n            dataSerializerType = dataSerializerType?.FixupValueType();\n\n            CecilSerializerContext.SerializableTypeInfo serializableTypeInfo;\n\n            if (dataSerializerType == null)\n            {\n                // TODO: We should avoid calling ResolveSerializer now just to have the dataSerializerType (we should do so only in a second step)\n                serializableTypeInfo = context.ResolveSerializer(dataType, profile: profile);\n                if (serializableTypeInfo == null)\n                    throw new InvalidOperationException(string.Format(\"Can't find serializer for type {0}\", dataType));\n                serializableTypeInfo.Local = local;\n                serializableTypeInfo.ExistingLocal = local;\n                dataSerializerType = serializableTypeInfo.SerializerType;\n            }\n            else\n            {\n                // Add it to list of serializable types\n                serializableTypeInfo = new CecilSerializerContext.SerializableTypeInfo(dataSerializerType, local, mode) { ExistingLocal = local, Inherited = inherited, IsGeneratedSerializer = complexSerializer };\n                context.AddSerializableType(dataType, serializableTypeInfo, profile);\n            }\n        }\n    }\n\n    public static TypeReference FindSerializerDataType(TypeReference dataSerializerType)\n    {\n        // Find \"DataSerializer<T>\" base and its dataType (T)\n        TypeReference dataType = null;\n        var dataSerializerTypeCurrent = dataSerializerType;","sourceCodeStart":68,"sourceCodeEnd":104,"githubUrl":"https://github.com/stride3d/stride/blob/96fad776d210c221682aac1ccdf4c79dc046fc38/sources/core/Stride.Core.AssemblyProcessor/Serializers/ReferencedAssemblySerializerProcessor.cs#L68-L104","documentation":"When a [DataSerializer] type's target data type is known but no serializer type has been established, ProcessDataSerializerGlobalAttributes calls context.ResolveSerializer(dataType); if that returns null (no serializer can be produced for the type), this error is thrown.","triggerScenarios":"A type is referenced as a serialization target but ResolveSerializer returns null: the type has no generated serializer, is not marked serializable, or its serializer dependencies failed to resolve for the given profile.","commonSituations":"Pointing [DataSerializer(typeof(MyType))] at a type the processor cannot serialize; profile mismatch so the serializer only exists for another graphics profile; typo/renamed type so the attribute target no longer resolves.","solutions":["Verify the target type is annotated [DataContract] or has an existing DataSerializer","Check that the target type's own serializer dependencies resolve (see error 194)","Ensure the correct profile is being processed where the serializer exists","Fix namespace/type name in the DataSerializer attribute after renames"],"exampleFix":"// before\n[DataSerializer(typeof(UnmarkedType))]\nclass S : DataSerializer<UnmarkedType> {}\n// after\n[DataContract]\npublic class UnmarkedType { ... }","handlingStrategy":"validation","validationCode":"if (!targetType.IsDefined(typeof(DataContractAttribute)) && !HasRegisteredSerializer(targetType))\n    throw new InvalidOperationException($\"{targetType} must have [DataContract] or a DataSerializer before use in [DataSerializer] attribute\");","typeGuard":"static bool IsResolvableSerializerTarget(Type t) =>\n    t != null && (t.IsDefined(typeof(DataContractAttribute)) || HasRegisteredSerializer(t));","tryCatchPattern":"try { ProcessGlobalAttributes(); }\ncatch (InvalidOperationException ex) when (ex.Message.StartsWith(\"Can't find serializer for type\"))\n{\n    logger.Error($\"Serializer target missing: {ex.Message}. Add [DataContract] or a DataSerializer.\");\n}","preventionTips":["Verify [DataSerializer(typeof(...))] targets exist and are annotated","Re-check attribute targets after type renames","Keep the target type inside assemblies processed by the AssemblyProcessor"],"tags":["serialization","missing-serializer","attributes"],"backgroundTag":"resource-not-found","analyzedSha":"96fad776d210c221682aac1ccdf4c79dc046fc38","analyzedAt":"2026-09-14T02:59:31.279Z","contentChangedAt":"2026-09-14T02:59:31.279Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}