  if (amount <= bal.unlocked) {
            bal.unlocked = bal.unlocked - amount;
        } else {
            uint256 remaining = amount - bal.unlocked;
            if (bal.earned < remaining) revert InvalidEarned();
            bal.unlocked = 0;
            uint256 sumEarned = bal.earned;
            uint256 i;
            for (i = 0; ; ) {
                uint256 earnedAmount = _userEarnings[_address][i].amount;
                if (earnedAmount == 0) continue;
  if (earnedAmount == 0) continue;
  if (earnedAmount == 0) {
i++;
continue;
}
