Error in TCPAssignment() constructor

[ytrewq271828]

During implementation, I've encountered an error at the TCPAssignment() constructor.

The error message was the following:
the default constructor of "std::unordered_map<std::any, E::UUID, std::hashstd::any, std::equal_tostd::any, std::allocator<std::pair<const std::any, E::UUID>>>" cannot be referenced -- it is a deleted functionC/C++(1790)

I think I didn't modify anything related to other classes and files but TCPAssignment.cpp and TcpASsignment.hpp.
I will be grateful if anyone lets me know the reason of this error.
Thanks in advance.

[Pusnow]

Which version do you use to compile KENS? Would you redownload KENS again and try recompiling?

I'm not sure what the data structure std::unordered_map<std::any, E::UUID, std::hashstd::any, std::equal_tostd::any, std::allocator<std::pair<const std::any, E::UUID>>> is.

Did you add a data structure similar to this?

[ytrewq271828]

Yes. I added an unordered_map<std::any, UUID> in the header file.
Is the error related to the std::any type issue?
I've defined it in the same way with other unordered_maps and there was no such error.

[ytrewq271828]

Error Resolved.
It was due to the feature of unordered_map, which uses hash function.
I changed the data structure from unordered_map to map. It resolved the error.