This error means that our extension is not able to retrieve a barcode number for the current product, 2 possible reasons :
Becarefull, for the “Barcode” and the “Image” case, you need to put 2 cordinate in the “size”.
You can change the font applied on all labels generated by the Barcode label extension.
To do it, download a font TTF file from Google and upload it into folder : app/code/BoostMyShop/BarcodeLabel/Fonts/
Then, rename the existing police file (LinLibertineC_Re-2.8.0.ttf
) into someting else (for example : ” LinLibertineC_Re-2.8.0.ttf .old “).
Finally, rename your newly uploaded font TTF file into ” LinLibertineC_Re-2.8.0.ttf “.
The new font should now correctly be used by the extension.