Non-numeric seeds and 20+ digit seeds cause a crash on Android

The game crashes when I try to change the seed to a long number or when I try to change the seed to something that is not a number.

Steps to Reproduce:
Old UI:

1. Type a letter or 20 digit seed in the seed box
2. Tap the "Create" button

New UI:

1. Type a letter or 20 digit seed in the seed box

Observed Results:
Old UI: The game crashes as soon as the "Create" button is tapped.

New UI: The game crashes as soon as a letter is typed or the seed reaches 20 digits.

Expected Results:
The game should not crash.