Session not valid


I use a debug version of mapd which I build it manually.
When I started mapdql and I type \c mapd mapd HyperInteractive in the command line, I got the log below. And I don’t know what caused this. Is it a error or warning.
Can anyone help me out.

E0102 11:29:57.571465  6438 MapDHandler.cpp:125] Session not valid.


looks like an error; the warnings starts with W. Is the mapd_server process crashing when you try to connect with mapdql?


Maybe. Thanks a lot.