Error message
 

Hi. Can anybody explain to me what the following error means (it appears when I activate the heat mass coupling in DPM panel)

"Time step too small in stiffbs: dt=7.500000e-0.21 t=0.000000e+000 0 y = 1.000000e-003 dy/dt=-9.350000e-003 1 y = 0.000000e+000 dy/dt=0.000000e+000"

Thanks, Ilias