Function InvalidModel

src/common/error_msg.cc:22–26

}

[[nodiscard]] std::string InvalidModel(StringView fname) {
  std::stringstream ss;
  ss << "Invalid model format in: `" << fname << "`.";
  return ss.str();
}

[[nodiscard]] std::string OldBinaryModel(StringView fname) {
  std::stringstream ss;