Blank input gives an error

[Skyost]

Product concerned :
Algogo Desktop / Algogo Mobile.

Describe the bug :
A blank input (when prompted) gives an error.

To Reproduce :
Steps to reproduce the behavior : Input nothing when prompted.

Expected behavior :
Maybe leave the value as it.

Screenshots :
None.

Mobile / Desktop specs (please complete the following information) :
No need of them.

Additional context :
None.