Error 20 in lightburn

[A4700 (Ahmad Heidari)]

Hi.Good day.What is the cause of error 20 in Lightburn software?

[Dskall (D Kallenberger)]

Unsupported or invalid g-code command found in block.

Sad new user: can’t get past “error:20 Unsupported or invalid g-code command found in block” - LightBurn Hardware Compatibility / Ortur Lasers - LightBurn Software Forum