考虑使用以下代码来检查错误：

if (response.getErrorCode() == AuthenticatorResponse.NO_ERROR) {
// No error occurred, continue with FIDO2 flow
} else if (response.getErrorCode() == AuthenticatorResponse.ERR_USER_VERIFICATION_FAILED) {
// User verification failed, handle appropriately
} else if (response.getErrorCode() == AuthenticatorResponse.ERR_OPERATION_DENIED) {
// Operation denied, handle appropriately
} else if (response.getErrorCode() == AuthenticatorResponse.ERR_NO_CREDENTIALS) {
// No valid credentials found, handle appropriately
} else {
// Unknown error occurred, handle appropriately
}

这个代码片段检查FIDO2响应对象中的errorCode属性，并根据其值执行适当的处理。在处理未知错误的情况下，开发者应该输出调试信息，并进行进一步的排查和修复。