Theoretically you can try to brute force it randomly but it's gonna take a while (especially if you used special characters+numbers). If you only had at least 3-4 characters it would reduce the time of the recovery very much. If you have something on that wallet maybe you should use hashcat and try your luck. Also if you have this corrupted file form this password manager you can work on it and try to retrieve some of the data, there are some ways to do it + every piece of information is crucial in recovery process