Unable to run the tests successfully on the polygon network

[nidhi-singh02]

I am trying to run the project on my machine, I have followed all the steps defined in the README.md under the "contracts" folder and I am using ploygon mumbai network. While trying to do
npx hardhat test, my test are failing with error

SportsPredictionGame Unit Tests
       Claim
         should split winnings between results:
     Error: sending a transaction requires a signer (operation="sendTransaction", code=UNSUPPORTED_OPERATION, version=contracts/5.7.0)

Node version - above 18.

[zeuslawyer]

@nidhi-singh02 the error seems to indicate that there iss no signer/provider. Indicates that perhaps you're PRIVATE KEY env var is not being picked up or is unset. Please take a look at that?

Also note that Mumbai has been deprecated and we've update the configs accordingly. Please pull the repo and use one of the supported networks (contracts/networks.js)

I'll close this issue for now as its possibly stale, but if you need help please reopen. Thanks!