Click the ‘Save GCode’ button and open the output in a text editor.
Error 2 is “Bad number format Missing the expected G-code word value or numeric value format is not valid”
Error 25 is “Invalid gcode ID:25 Repeated g-code word found in block”
This means you have a communication error of some kind - LightBurn’s gcode is fine or I’d be hearing about it from everyone, not just you. 
LightBurn does push the communication really hard, so if a machine does have issues, they’re more likely to show up when running LightBurn than with some software.