Gerber Envision error

I am consistently for the last month encounting an error that reads
"ENVISION system error #23. Unknown plot data"
and other similar errors. And what most frequently happens is the cutter forgets its shape that it needs to cut. So the labels get printed by the edge, but when it comes to the cutter(envision), instead of cutting around it, it cuts through it, and so the job needs to be restarted.
This is the main problem I am encountering.
What could be the problem?

 

The thing is though that this error just randomly occurs. Sometimes it fine, sometimes its not. And just restarting the job usually fixes it. But this process causes us to waste a lot of resources, since the job only gets partially done and needs to be scrapped