Partial Sign Transaction is currently broken

[Codypinto23]

I'm receiving the error "Transaction mutated after being populated from Message" when trying to send a coupon from my shop to my buyer. There appears to be an issue in Solana preventing this from working properly. I tried pinning my libraries to those in your package.json for the coupons branch, but the issue is still present there.

Issue related to this problem on Solana's repo here

[ZYJLiu]

Try updating your package-lock.json and package.json using the files in branch 5 of the tutorial, and then run "npm install" again

https://github.com/pointer-gg/solana-pay-tutorial/blob/5-coupon/package-lock.json
https://github.com/pointer-gg/solana-pay-tutorial/blob/5-coupon/package.json