Mid-print issue, extruder issue? I have succumbed to asking the community for assistance. I've been scratching my head and lost many late nights and time trying to figure out what is going on with my 3D printer.
Please see the image of what's going on with it.
Sometimes my printer doesn't even get this far, most of the time it fails at the 5th layer or so because it stops extruding is what I suspect.
I've replaced the hot end entirely, a new thermistor inside the hot end, replaced the PTFE tube, upgraded the extruder feeder to aluminum. Replaced the extruder gear, and for some reason, the filament just stops feeding.
I've tried several retraction settings from 80 mm/s and 2 mm of filament, to 20 mm/s and 6 mm of filament.
Initial Layer Height: 0.25 mm

I hope the community can help me out here.
Do the two loose pieces go where the fill shows up on the larger piece?  If so, you may have internal surfaces there that need deleting in your drawing so that they don't mess up your slice program.  Otherwise, the slice program may leave a gap in the gcode where you have no extrusion.
If you retract too much, it can cause the filament to jam in the hotend, but you wouldn't be getting all the mid-air extrusion, not connecting to anything.
We need more information to give you a more precise answer.  I suspect you have a settings or gcode/drawing issue rather than a hardware issue.