Steps to reproduce:

1. Open Data collection -> Hosts
2. Click on Host Wizard
3. Proceed to Template selection
4. Select any template - click Next
5. Without adding host name click on the Host group field
6. Click back on the Host name field
7. Without adding host name click back on Host group field
8. See browser's console

Result:
Console error displayed:

Uncaught TypeError: Cannot read properties of null (reading 'replace')
    at #parseInputName (<anonymous>:2314:8)
    at #inputNameToInputPath (<anonymous>:2324:30)
    at HTMLDivElement.<anonymous> (<anonymous>:239:76)

See video:

Note - issue can be reproduced with any Host Wizard field, which has inline validation. (Host name, Host group, Interface, PSK, Mandatory macros, Macros with regex etc.)
Expected:
There should be no console errors.