practicing question gasReporter

[zhangdav]

const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY || "key"

gasReporter: {
        enabled: false,
        currency: "USD",
        outputFile: "gas-report.txt",
        noColors: true,
        coinmarketcap: COINMARKETCAP_API_KEY,
    },
}

.env : COINMARKETCAP_API_KEY=XXXXX-6156-XXXX-94ac-XXXXXXXX
On this gasReporter, I ran it in VS CODE, but the ETH/USD information did not appear in the gas-report.txt file：

I have tried yarn hardhat clean and manually deleting the artifacts folder, replaced with the teacher's CMC API key, and asked ChatGPT for assistance.

Can someone tell me what's going on? @PatrickAlphaC