In file included from /in/driver/main.cpp:5:0:
/in/hashtable.hpp: In instantiation of 'HashTable<Key, Value, Hash, KeyEqual>::Iterator HashTable<Key, Value, Hash, KeyEqual>::erase(const HashTable<Key, Value, Hash, KeyEqual>::Iterator&) [with Key = int; Value = int; Hash = std::hash<int>; KeyEqual = std::equal_to<int>]':
/in/hashtable.hpp:354:18:   required from 'bool HashTable<Key, Value, Hash, KeyEqual>::erase(const Key&) [with Key = int; Value = int; Hash = std::hash<int>; KeyEqual = std::equal_to<int>]'
/in/driver/main.cpp:120:35:   required from here
/in/hashtable.hpp:383:16: error: could not convert 'nextIt' from 'std::_Fwd_list_iterator<std::pair<const int, int> >' to 'HashTable<int, int, std::hash<int>, std::equal_to<int> >::Iterator'
         return nextIt;
                ^~~~~~