payment related issue

[kaushaldarji29]

i try to add this library for payments. in that i add merchant's upi id and marchent code also and other required things as said in docs. it's fine but when i try to do pyment and after enter the upi pin i got following error (" Payment failed!!! this transaction may be risky. For your saftey, it can't be completed at this time....")

may it can cause bcz from debug apk. will it work on signed apk ??

please give solution for this...