The format of your pcb svg is incorrect. To get holes you need to have circles (not rectangles nor ellipses.) Your svg looks like this
to work it needs to change to this
except the pads (circled in green and on 0.1in boundaries) need to move to the appropriate place on the rectangles (circled in red) with the desired pitch and hole size (these are set to 0.038in for 0.1in headers) if it isn’t 0.1in. That produces this as a Fritzing part
from this .fzpz
8BIT LED RING-fixed.fzpz (21.0 KB)
This is covered in this parts making tutorial here (along with a lot of other things.)
Peter