Brother Printer sdk for android.. Getting a "File not found" error

Having problem with trying to print a pdf file on my QL 1100 label printer using a custom android application integrated with the Brother Print SDK. It's a sample custom app that I'm testing it on.. Keep getting "ERROR_FILE_NOT_FOUND" with my custom android application, but on the sdk demo the path file that im using works perfectly fine, but is not working on my app. going attach the GitHub repo below and the brother print SDK.
https://github.com/DannyArrow/PrintImageSample
https://support.brother.com/g/b/agreement.aspx?dlid=dlfp100900_000&c=eu_ot&lang=en