Chrono and periodic limits
*** ERROR: Some boundary particle was excluded. ***
*** Maybe some Chrono object went beyond the periodic limits. Be careful when combining the use of Chrono with periodic limits.
TimeStep: 1.051588 (Nstep: 19089)
Total boundary: 1 (fixed=0 moving=0 floating=1)
Excluded for: position=1 rhop=0 velocity=0
Some boundary particle exceeded the -Z limit (bottom limit) of the simulation domain.
Please, how to fix it?