Strange problem with large program

I have a gcode program much larger than anything I've run before. It has about 800k lines.
I'm on Linux Mint 20, using linuxcnc 2.8.4-76-g6082f1df7 and axis.
When I run the gcode, I have several issues:
1. The preview window in axis is garbage (see axis_screen.png).
2. When I start the program, I get a popup error (see first_error.png)
3. I tell it to 'run anyway' and get joint errors (see second_error.png), specifically the X axis on line 12. In the first image, you can see line 12; nothing odd there.

I searched for any x or y command in the entire file that has more than one digit in front of the decimal place (X19.0 would be found, X9.0 would not). Nada.

I loaded a 50 line gcode program I use for surfacing. It is configured to surface the same size piece of material as the very large program. The surfacing program runs with no problems.

Please advise,
Steve

Thanks Aciera, that looks like it works. I'm unable to commit to a full run right now, but I added your comment, raised z=0 so I was cutting on air, and the program ran and started cutting (then I stopped it).