Error: failed to parse contract artifact

[umutsatir]

I was trying to declare my contract but it gives this error:

I already deployed my account, here is the StackScan result:

My Scarb and Cairo versions:

I 've already seen the previous issue that people suggest adding [[target.starknet-contract]] in Scarb.toml file and I did it but didn't work.

[xJonathanLEI]

Hi I think you're declaring the wrong file. Use the file with .contract_class.json instead of the one with .sierra.json.