Cannot load message class for [gnss_comm/GnssPVTSolnMsg]

[slender1031]

When I use my own ublox f9p, I can only get the topic /ublox_driver/receiver_lla. The other topics all give the same errors, as these pictures shown:

I wonder what's the problem. BTW, I have already used the provided config file ucenter_config_f9p_gvins.txt, however, it does not work.

[yyyxs1125]

Just source ./devel/setup.bash in each terminal, the problem will be solved.