Interrapt G34

Environment:
https://qainterrapt.brainster.xyz/login
Google Chrome

Description:
After entering invalid characters with Latin and Cyrilic alphabet characters in the surname field, the attendee can be created.

Pre-conditions:
User must be preregistered.

Steps to reproduce:
1.Click on 'ATTENDEES' menu.
2. Click on 'CREATE' button from the top right corner.
3.Fill the 'Name' field with valid data.
4.Fill the 'Surname' field with invalid data.
5.Fill the 'Email' field with valid data.
6.Fill the 'Phone' field with valid data.
7.Fill the 'City' field with valid data.
8.Fill in the 'High school' field with valid data.
9.Fill the 'Faculty' field with valid data.
10.Click on the drop-down field labeled "Webinar."
11.Select a webinar from the available list.
12. Click on the 'CREATE' button in the bottom right corner.

Expected Result:
The attendee should not be created after entering invalid characters with Latin and Cyrilic alphabet characters in the surname field.

Actual Result:
The system accepts the input without displaying any validation error, and the new attendee can be created.