Error: "Cannot read properties of undefined (reading 'getBalance')"

[houstonTaleubou]

Why am I getting "Cannot read properties of undefined (reading 'getBalance')"?

[TatyOko28]

This happens when you try to call getBalance() on an undefined object. Ensure that the object is properly initialized:
Correct:

const provider = ethers.getDefaultProvider();
const balance = await provider.getBalance("0xYourAddressHere");

Incorrect:

const balance = await provider.getBalance(); // provider might be undefined