Functional Bug (Group-1): Error while taking fields' input

[shubham-agrawal04]

When the username during registration is provided with spaces, it considers separates word as the subsequent password and initial amount, instead of raising an error, and the other words, if more than 3 words are present, are discarded.

One sample user-database file from server is provided below to verify that the account are added successfully.

[shubham-agrawal04]

It should technically raise a "incorrect username error"

[shubham-agrawal04]

[shubham-agrawal04]

This doesn't just happen in the username field, but happens for all fields