Why do I get "end of file found before the left brace '{' in hashtable.h(8)"?

It gives that error when i try to compile and I don't know why because both set of braces are matched.

   #include <iostream>
   #include <vector>
   #include <list>
   #include <string>
   #include <utility>
   #include <fstream>

  namespace cop4530 {

  template <typename T>
  class HashTable {
  public:
        HashTable(size_t size = 101);
        ~HashTable();
        bool contains(const T &);
        bool insert(const T &);
        bool insert(T && );
        bool remove(const T& );
        void clear();
        bool load(const char *);
        void dump();
        bool write_to_file(const char *);

        // used when improper size is given (for example
        // size is 0 or negative)
        static const unsigned int default_capacity = 11;
        static const unsigned int max_prime = 1301081;

    private:
        std::vector<std::list<T>> listTab;
        void makeEmpty();
        void rehash();
        size_t myhash(const T &);
        unsigned long prime_below(unsigned long);
        void setPrimes(std::vector<unsigned long> &);
        int currentSize;
   }; // end of HashTable

   #include "hashtable.hpp"

   };   // end of namespace 4530

Or is the problem possibly in the .hpp or even the main.cpp?

Thanks!