Lesson 9: recent Winner: Not displaying any address on UI

[DorianDaSilva]

Recent winner is displaying 0x0000000000000000000000000000000000000000 as winner. Is this because of VRF/Keepers issue I have been having?

[krakxn]

@alymurtazamemon Worth looking why it points to the dead address

[alymurtazamemon]

@krakxn Maybe he did not run the script for picking the winner.

[adityabhattad2021]

Did you run mockOffChain script?

[adityabhattad2021]

if not please run in first
Here is the script:
https://github.com/PatrickAlphaC/hardhat-smartcontract-lottery-fcc/blob/main/scripts/mockOffchain.js

[ashrth]

@adityabhattad2021 I am also facing similar issue where, UI is showing 0x0000000000000000000000000000000000000000 as recent winner, and no matter how many times I enter the raffle, number of players stay the same, so every time I need to use the UI I need to run the mockoffchain script in the background ? then how will the other users interact with it? I'm bit confused here...

[adityabhattad2021]

Ya, so when we are only testing when we are running a local blockchain instance where we deploy our own chainlink mock contracts(These are not real) which we need to call in order for it to call our performUpkeep function after the given interval of time...
then how will the other users interact with it?
but when deployed on real mainnet or testnet those contract for which we used mock will be really owned and operated by chainlink nodes and will call the function as ordered from there side.
Just understand all these mock contracts are to be used in development environment and not on real testnet or mainnet, so on real testnet or mainnet you won't need to call mockOfChain script.

[ashrth]

@adityabhattad2021 Oh, now I understand, this solves a bunch of my queries, Thanks...

[adityabhattad2021]

Happy that I could help!