Error 9 gcode lockout

The error message is a bit unusual.
After the Shock detection message it looks like the laser is reconnecting which is when the error:9 is appearing.
Does the error:9 always follow the Shock detection?
In any case, if you are trying to laser a line drawing of that complexity at 20,000 mm/min you’re going to have a bad time. You’re likely around 2 orders of magnitude too fast for something like that. I’d suggest reducing speed to around 200 mm/min and testing behavior. Does it work in that case? Then you could empirically try increasing speed to see at what point you get the error and at what point the quality is compromised.
If that doesn’t resolve it, can you check the value of GRBL config $603? If you’re not sure about this then run ?? command in Console and return the output.