[Discuss-gnuradio] Block Path error

[ito . satosi]

Hi,

I install UHD and GNU Radio from source code.
And when gnuradio-companion is started, the following error is output.
Please tell me how to solve it.

address@hidden:~/workarea/gnuradio/build$ <<< Welcome to GNU Radio Companion 
3.7.10.1 >>>

Block paths:
        /home/psc/.grc_gnuradio
        /usr/local/share/gnuradio/grc/blocks

Loading: "/home/psc/workarea/gnuradio/AAA/examples/AAA_USRP.grc"
Block key "uhd_usrp_sink" not found
Block key "uhd_usrp_source" not found
>>> Done

Best Regards,
Satoshi Ito