Thanks for your bug report. We appreciate it a lot.

win10 + VS2019
I use cmake-gui to generate the solution and then started to compile the file, and got the following problem,
1>------ 已启动生成: 项目: mmdeploy_core, 配置: Debug x64 ------
1>tensor.cpp
1>E:\vOpenMM\mmdeploy\csrc\core/status_code.h(98): warning C4275: 非 dll 接口 class“system_error2::status_code_domain”用作 dll 接口 class“mmdeploy::StatusDomain”的基
1>E:\vOpenMM\mmdeploy\third_party\outcome\outcome-experimental.hpp(6598): note: 参见“system_error2::status_code_domain”的声明
1>E:\vOpenMM\mmdeploy\csrc\core/status_code.h(98): note: 参见“mmdeploy::StatusDomain”的声明
1>E:\vOpenMM\spdlog\include\spdlog/fmt/bundled/core.h(1728): error C2338: Cannot format an argument. To make type T formattable provide a formatter specialization: https://fmt.dev/latest/api.html#udt
1>E:\vOpenMM\spdlog\include\spdlog/fmt/bundled/core.h(1849): note: 查看对正在编译的函数 模板 实例化“fmt::v8::detail::value fmt::v8::detail::make_arg<true,Context,fmt::v8::detail::type::custom_type,mmdeploy::DataType&,0>(T)”的引用
1> with
1> [
1> Context=fmt::v8::format_context,
1> T=mmdeploy::DataType &
1> ]
1>E:\vOpenMM\spdlog\include\spdlog/fmt/bundled/core.h(1871): note: 查看对正在编译的函数 模板 实例化“fmt::v8::format_arg_storefmt::v8::format_context,mmdeploy::DataType,mmdeploy::DataType::format_arg_store<mmdeploy::DataType&,const mmdeploy::DataType&>(mmdeploy::DataType &,const mmdeploy::DataType &)”的引用
1>E:\vOpenMM\spdlog\include\spdlog/fmt/bundled/core.h(1872): note: 查看对正在编译的函数 模板 实例化“fmt::v8::format_arg_storefmt::v8::format_context,mmdeploy::DataType,mmdeploy::DataType::format_arg_store<mmdeploy::DataType&,const mmdeploy::DataType&>(mmdeploy::DataType &,const mmdeploy::DataType &)”的引用
1>E:\vOpenMM\spdlog\include\spdlog/logger.h(357): note: 查看对正在编译的函数 模板 实例化“fmt::v8::format_arg_storefmt::v8::format_context,mmdeploy::DataType,mmdeploy::DataType fmt::v8::make_format_args<fmt::v8::format_context,mmdeploy::DataType&,const mmdeploy::DataType&>(mmdeploy::DataType &,const mmdeploy::DataType &)”的引用
1>E:\vOpenMM\spdlog\include\spdlog/logger.h(89): note: 查看对正在编译的函数 模板 实例化“void spdlog::logger::log_<mmdeploy::DataType&,const mmdeploy::DataType&>(spdlog::source_loc,spdlog::level::level_enum,spdlog::string_view_t,mmdeploy::DataType &,const mmdeploy::DataType &)”的引用
1>E:\vOpenMM\mmdeploy\csrc\core\tensor.cpp(99): note: 查看对正在编译的函数 模板 实例化“void spdlog::logger::log<mmdeploy::DataType&,const mmdeploy::DataType&>(spdlog::source_loc,spdlog::level::level_enum,fmt::v8::basic_format_string<char,mmdeploy::DataType &,const mmdeploy::DataType &>,mmdeploy::DataType &,const mmdeploy::DataType &)”的引用
1>registry.cpp
1>E:\vOpenMM\mmdeploy\csrc\core/status_code.h(98): warning C4275: 非 dll 接口 class“system_error2::status_code_domain”用作 dll 接口 class“mmdeploy::StatusDomain”的基
1>E:\vOpenMM\mmdeploy\third_party\outcome\outcome-experimental.hpp(6598): note: 参见“system_error2::status_code_domain”的声明
1>E:\vOpenMM\mmdeploy\csrc\core/status_code.h(98): note: 参见“mmdeploy::StatusDomain”的声明
1>stacktrace.cpp
1>正在生成代码...
1>已完成生成项目“mmdeploy_core.vcxproj”的操作 - 失败。

currently I'm not sure whether this is a spdlog problem or a mmdeploy problem or both.
the only thing I'm sure is that this error is raised by the following sentence, in tensor.cpp.

MMDEPLOY_ERROR("mismatched data type {} vs {}", desc_.data_type, tensor.desc().data_type);

My temporary fix is make them integer,

MMDEPLOY_ERROR("mismatched data type {} vs {}", (int)desc_.data_type, (int)tensor.desc().data_type);

any better idea, please?