Can you help me with achieving the custom notification sound

[addyuchiha]

So I am new to expo and react native, first I used expo notification api it worked really well but I wasnt able to do the custom sound part with that then I found your repo, so as I was following your steps I got stuck at this point:

navigate to : https://expo.dev/accounts//projects//credentials/android/

like its showing error fetching the credential and then when I manually try to add creadentials Its first asking me for something called keystore, so I dont want to upload this app to appsoter or playstore I just want a installable file, so I dont have it, what should I do??

Thank you very much