This usually indicates that during the feeding process of the CFS lite, the CFS lite Feeding Motor is unable to properly feed the filament. Meanwhile, since the extruder continues extruding filament, the spring in the Filament Buffer remains compressed (i.e., stuck at the empty limit position).
Check the filament currently being fed to see if it is tangled. Due to filament entanglement, the filament may not be able to smoothly enter through the Filament Inlet.
You can tap Unload and wait until the filament is fully retracted. Then remove the tangled filament from the CFS lite, resolve the tangling issue, and place the filament back into the CFS lite. Reload the filament to resume printing.