G-Code Motion Target Exceeded GRBL Win 10 / Lightburn

What is causing this?
Grbl 1.1f [‘$’ for help]
[MSG:‘$H’|‘$X’ to unlock]
$X
[MSG:Caution: Unlocked]
ok
Waiting for connection…
ok
[VER:1.1f.20180715:]
[OPT:VMZ,35,254]
Target buffer size found
ok
Homing
ok
<Idle|WPos:0.000,0.000,0.000|FS:0,0|WCO:0.000,0.000,0.000>
ok
Starting stream
ALARM:2
G-code motion target exceeds machine travel. Machine position safely retained. Alarm may be unlocked. (Right-click the ‘Devices’ button to reset the connection)
On or near line 2:
Stream completed in 0:00
[MSG:Reset to continue]
ok
Grbl 1.1f [‘$’ for help]
[MSG:‘$H’|‘$X’ to unlock]
[MSG:Caution: Unlocked]
ok
<Idle|WPos:0.000,0.000,0.000|FS:0,0|WCO:0.000,0.000,0.000>