esp start fails (master build). error: "Warning: Could not load libws_espcontrol.so: /opt/HPCCSystems/lib/libws_espcontrol.so: undefined symbol: _ZN10CEspConfig20reSubscribeESPToDaliEv"
0000000E 2018-04-30 12:33:35.477 59817 59817 "ERROR: Failed to load shared object (libws_espcontrol.so)"