403 error for eth getBalance

test_account = "0x69EA6b31ef305d6b99bB2d4c9D99456fA108b02A"
block_num = 4168496
print(web3.eth.getBalance(test_account,block_num))

I got a 403 error for this query, I hope to know the reason for this failure.

Welcome to the Infura community @Fa91831388
can you provide the full error body and the code you’re using that is generating the error?