Every print starts with an exclamation point using react-native-bluetooth-escpos-printer

Every print starts with an exclamation point with react-native-bluetooth-escpos-printer using @brooons/react-native-bluetooth-escpos-printer": "^1.2.0"

here is an example of the print :

image here

I solved the problem. It was in PrinterCommand file of the library in POS_Print_Text function it has an extra concatenation of GS_! for the beginning of each Text line so i removed that and now it works fine.