I am using this demo to create custom sticker for my app.
https://github.com/idoideas/StickerMaker-for-Whatsapp
all working fine but when I try to add sticker pack, I'm getting this error.
I search a google but I can't find answer or clue.
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This is beacuse there is some issue in your StickerBook class, The contents.json file is not created or either it has wrong structure. – NS. Jul 09 '21 at 21:00