gr-symbolrate Build Error

/gr-symbolrate/lib/symbolrate_impl.cc: In static member function ‘static gr::symbolrate::symbolrate::sptr gr::symbolrate::symbolrate::make(float, float, float, bool)’:
/gr-symbolrate/lib/symbolrate_impl.cc:36:9: error: could not convert ‘gnuradio::get_initial_sptr(T*) [with T = gr::symbolrate::symbolrate_impl]()’ from ‘boost::shared_ptr<gr::symbolrate::symbolrate_impl>’ to ‘gr::symbolrate::symbolrate::sptr {aka std::shared_ptr<gr::symbolrate::symbolrate>}’
       return gnuradio::get_initial_sptr
              ~~~~~~~~~~~~~~~~~~~~~~~~~~
         (new symbolrate_impl(samp_rate, valid_min, valid_max,logRates));
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~