esc2html output error

[Achicken7301]

trafficstars

I use windows 10, PHP 7.3.9 because of https://github.com/receipt-print-hq/escpos-tools/issues/71

These are commands i use:

D:\laragon\www\escpos-tools (master)
λ php vendor\mike42\escpos-php\example\margins-and-spacing.php > margins-and-spacing.bin

D:\laragon\www\escpos-tools (master)
λ php esc2html.php margins-and-spacing.bin > margins-and-spacing.html
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command DLE NUL                                                        
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS L                                                           
WARNING: Unknown command GS W                                                           
WARNING: Unknown command GS W                                                           
WARNING: Unknown command GS W                                                           
WARNING: Unknown command GS W                                    

This is margins-and-spacing.html file