When I use the net command in my HAL file in LinuxCNC to connect a QtDragon pin (for example, net jogspeed_u qtdragon.slider-jogspeed-linear classic ladder.0.floatin-05) to a HAL signal, I get an error saying that the pin qtdragon.slider-jogspeed-linear does not exist. However, when I run the same command via the halcmd interface, no error occurs. What could be the reason for this issue?