The controller is indicating your g code is attempting to raise the Z axis higher than the machine is physically able to raise the axis by 101.6mm. This could be caused by several factors but I would start with how you set the Z axis work zero, it appears the work zero is at the top of the axis travel (the offending command is G0 Z4 (imperial) which would be exactly 101.6mm). Most likely you need to set the end of the bit at the start point you specified in the CAM program and hit the “zero” button(s) on the controller screen (the ones that look like a map pin)
This provides more explanation: