Error Codes
ClockTowerSubscribe.sol
0: Subscriber cannot be provider1: ERC20 token already added2: No zero address call3: Subscription doesn't exist4: Token address cannot be zero5: Token not approved6: Time already checked7: Must have admin privileges8: Must be provider of subscription9: Subscriber not subscribed or already subscribed10: Either token allowance or balance insufficient11: Problem sending refund12: Problem sending fees13: Only provider can cancel subscription14: Must be between 1 and 715: Must be between 1 and 2816: Must be between 1 and 9017: Must be between 1 and 36518: Amount below token minimum19: Reentrancy attempt20: Token paused21: Above Cancel Subscriber Limit22: No Subscribers23: Subscription is cancelled24: Cant subscribe while paginating25: Already subscribed