hi please anyone can explain to me i have created a solidity contract and when I upload on bsctestnet everything is fine but when I tries balanceOf function on bscscan i got error

balanceOf method Response ]
uint256 : Error: Wrong response id "0" (expected: "1") in {"jsonrpc":"2.0"
"id":1
"method":"eth_call"
"params":[{"from":"0x0000000000000000000000000000000000000000"
"data":"0x70a08231000000000000000000000000db830455e41846d6ab836ad181d46eca6f212b60"
"to":"0xe72d3472b7148b59b42518e3063a6a6b8d3af1dd"}
"latest"]}

How are you running the balance of function

/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}