/opt/homebrew/include/fmt/base.h:1209:15: note: candidate template ignored: requirement 'is_named_arg<folly::Range<const char *>>::value' was not satisfied [with T = folly::Range<const char *>]
1209 | static auto map(const T& named_arg) -> decltype(map(named_arg.value));
| ^
/opt/homebrew/include/fmt/base.h:2815:30: error: non-type template argument is not a constant expression
2815 | detail::make_descriptor<context, T...>()>;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/homebrew/include/fmt/format.h:4200:27: note: in instantiation of template type alias 'vargs' requested here
4200 | return vformat(fmt.str, vargs<T...>{{args...}});
| ^
/Users/chen/Desktop/c++/day02/build/_deps/folly-src/folly/IPAddress.cpp:123:43: note: in instantiation of function template specialization 'fmt::format<const folly::Range<const char *>, unsigned long>' requested here
123 | throw IPAddressFormatException(fmt::format(

template <typename... T>
using vargs =
detail::format_arg_store<context, sizeof...(T),
detail::count_named_args<T...>(),
detail::make_descriptor<context, T...>()>;

template <typename... T>
FMT_NODISCARD FMT_INLINE auto format(format_string<T...> fmt, T&&... args)
-> std::string {
return vformat(fmt.str, vargs<T...>{{args...}});
}

throw IPAddressFormatException(fmt::format(
"CIDR value '{}' is > network bit count '{}'",
vec.size() == 2 ? vec.at(1) : to(cidr),
subnet.bitCount()));

non-type template argument is not a constant expression