Two Trees TTS-55 - Failed Etch - missing engraving

I imported the gcode file you shared into LightBurn by changing the file extension back to .gcode then clicking File, then - Import and the breaks are not present in the imported file.

(the error message is mine because of the pre-existing setting when I imported the file.)
The missing engraving is an artifact of the engraver not a result of unanticipated code generated by LightBurn.

Engravers do not proceed with a job if they drop information. Typically with missing data, the job ‘stops’ because there’s no way to catch up or resume within the job. There’s no position storage or buffered recovery to refer back to. It’s incredibly unlikely to be communication related either.

Does the laser light go dim where the engraving is incomplete?
There are a couple of possible causes.

I’m assuming that the shown engraving is oriented with the x-Axis Left-Right and the Y-axis Up-down on my screen.

Most of the missing engraving is along the Y-axis and with complex arcs.

This gives me three remaining ideas to test:

Cornering algorithm, Broken control wiring, and edge-case

The Cornering algorithm will reduce power when corners or complex curves exceed the allowed speed. To verify this we need the maximum speeds out of the machine settings report, and the speed and power the engraving was commanded at.

From the GCode you shared, the engrave speed is 700mm/min and you’re engraving at 100% power.
700mm/minute should be well within the range of the allowable speed on even the slowest machines.

From the Console window, please request the settings report by typing $$ and pressing enter.
Please copy the part of the report with $110, $111, $112 in it.

Please repeat the job, but reduce the engrave speed by 20%. This has a similar effect as increasing laser power and if it completes it shows the settings were on the edge. Slowing may also overcome the cornering algorithm but It doesn’t seem to be the likely cause.

Finally, while it’s engraving, very carefully wiggle both ends of