Invalid string input does not display a proper error message in creating a new project

[Naseem77]

Title:
Invalid string input does not display a proper error message (Toast notification)

Description:
When entering invalid strings into the input field, such as URLs or unaccepted formats (e.g., "(http://www.google.com/)", "test", "hello world"), no proper error message is displayed via Toast notification. Instead, the system either fails silently or displays a generic message that does not guide the user on the allowed input format.

Steps to Reproduce:

1. Navigate to code graph homepage
2. Click on "Create new project"
3. Enter one of the following invalid strings: www.google.com, test, hello world
4. Click on "Create" button

Expected Result:
A clear and specific error message (Toast notification) appears, explaining the accepted format or criteria for valid input.
The error message should guide the user to correct the input.