gen grpcServer happen invalid type

[nogolang]

this is my build

func WireApp() *conf.GrpcServer {
    wire.Build(
        wire.Struct(new(conf.GrpcServer), "*"),
        conf.NewGrpc,
        conf.ZapProvider,
        conf.GormProvider,
        service.ProviderSet,
    )
    return &conf.GrpcServer{}
}

this is NewGrpc

func NewGrpc(logger *zap.Logger) *grpc.Server {
    svc := grpc.NewServer()

    loadMiddleware(logger, svc)

    return svc
}

gen grpcServer happen invalid type， why?

func WireApp() *conf.GrpcServer {
    logger := conf.NewZapConfig()
    invalid type := conf.NewGrpc(logger)
    grpcServer := &conf.GrpcServer{
        Grpc: invalid type,
    }
    return grpcServer
}

error info

wire: 20:10: expected ';', found 'type' (and 3 more errors)
wire: grpc-layout/cmd: generate failed
wire: grpc-layout/cmd: wrote D:\program\3-项目\1-基础架构\2-go架构\2-grpc架构\cmd\wire_gen.go
wire: at least one generate failure

[nogolang]

the problem is fix , i don't know why，i refresh the wire import in go mod，then it's work ，it's very weird